Why you should use JavaScript, HTML/CSS & React Online Test?

The JavaScript, HTML / CSS & React Test makes use of scenario-based questions to test for on-the-job skills as opposed to theoretical knowledge, ensuring that candidates who do well on this screening test have the relavant skills. The questions are designed to covered following on-the-job aspects: Comprendre la syntaxe et fondamentaux JavaScript Connaissance des fonctionnalités et de l'utilisation ES6 Capacité à écrire le code JavaScript orienté objet Expérience dans la gestion des API et passer des appels HTTP Maîtrise de travailler avec nœud asynchrone.js et promesses Bâtiment des composants réutilisables avec JSX à réagir Comprendre le cycle de vie des composants React Expertise dans l'utilisation des crochets React et des composants fonctionnels Solide compréhension du modèle de boîte CSS Capacité à créer des dispositions flexibles à l'aide de Flexbox et Grid

JavaScript, HTML/CSS & React Online Test

Q: What topics are covered in the JavaScript, HTML/CSS & React Online Test?

Bases JavaScript JS ES6 Js oups Manipulation des API Node asynchrone.js et promesses Composants de construction avec JSX Cycle de vie des composants react REACT CROCKS ET COMPOSANTS FONCTIONNEL Modèle de boîte CSS Dispositions flexibles et grille CSS réactif Programmation JavaScript

About the test:

Le test JavaScript, HTML / CSS & React utilise des MCQ basés sur le scénario pour évaluer les candidats sur leur compétence dans le langage de programmation JavaScript, le balisage HTML / CSS et la bibliothèque React. Le test évalue la compréhension des candidats de sujets tels que la manipulation DOM, la manipulation des événements, le cycle de vie des composants, la gestion de l'État, les accessoires et le rendu et le style CSS. Les candidats sont évalués sur leur capacité à utiliser ces technologies pour résoudre des problèmes du monde réel et développer des applications Web réactives et interactives.

Covered skills:

Bases JavaScript
Js oups
Node asynchrone.js et promesses
Cycle de vie des composants react
Modèle de boîte CSS
CSS réactif

JS ES6
Manipulation des API
Composants de construction avec JSX
REACT CROCKS ET COMPOSANTS FONCTIONNEL
Dispositions flexibles et grille
Programmation JavaScript

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9 reasons why

Adaface JavaScript, HTML/CSS & React Test is the most accurate way to shortlist Développeur complets

Reason #1

Tests for on-the-job skills

The JavaScript, HTML/CSS & React Online Test helps recruiters and hiring managers identify qualified candidates from a pool of resumes, and helps in taking objective hiring decisions. It reduces the administrative overhead of interviewing too many candidates and saves time by filtering out unqualified candidates at the first step of the hiring process.

The test screens for the following skills that hiring managers look for in candidates:

Capacité à gérer efficacement les exceptions et les erreurs
Maîtrise de la syntaxe ES6 et des concepts
Compréhension des principes de programmation orientés objet en javascript
Connaissance du travail avec les API et de la manipulation des opérations asynchrones
Expérience dans la construction de composants avec JSX
Familiarité avec le cycle de vie des composants React
Maîtrise de l'utilisation de crochets React et de composants fonctionnels
Compréhension du modèle de boîte CSS et de son application
Maîtrise de la création de conceptions CSS réactives
Compétences de programmation JavaScript fortes

Reason #2

No trick questions

Traditional assessment tools use trick questions and puzzles for the screening, which creates a lot of frustration among candidates about having to go through irrelevant screening assessments.

View sample questions

The main reason we started Adaface is that traditional pre-employment assessment platforms are not a fair way for companies to evaluate candidates. At Adaface, our mission is to help companies find great candidates by assessing on-the-job skills required for a role.

Why we started Adaface

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Reason #3

Non-googleable questions

We have a very high focus on the quality of questions that test for on-the-job skills. Every question is non-googleable and we have a very high bar for the level of subject matter experts we onboard to create these questions. We have crawlers to check if any of the questions are leaked online. If/ when a question gets leaked, we get an alert. We change the question for you & let you know.

How we design questions

Ce ne sont qu'un petit échantillon de notre bibliothèque de plus de 10 000 questions. Les questions réelles à ce sujet JavaScript, HTML / CSS & React Test ne sera pas googleable.

🧐 Question
Medium Async Await Promises Promises Async-Await	Solve
What will the following code output? A: 24 after 5 seconds and after another 5 seconds, another 24 B: 24 followed by another 24 immediately C: 24 immediately and another 24 after 5 seconds D: After 5 seconds, 24 and 24 E: Undefined F: NaN G: None of these
Medium Bitcoin prices Axios Promises	Solve
Review the following JavaScript code and pick the correct options: Assume that the API returns a successful 200 response code and a JSON object as the response body. What would the value of ‘a’ be after the code is executed?
Medium My Module Scope	Solve
What will the output of the following JavaScript code be?
Medium Promise Resolve Promises Async-Await	Solve
What does the following code output?
Easy Throw, Try, Async Promises Async-Await	Solve
What does the following JS code output?
Easy Background Properties	Solve
Consider the following shorthand CSS example: background: #f7f7f7 url(jolie.jpg) no-repeat scroll 0px 0px; Which of the following show the individual background properties represented by the shorthand:
Easy Colorful sentences	Solve
Our intern is writing a colorful blog post, and has written the following code. What colors will the sentences be? A: Sentence 1 will be gray, Sentence 2 will be pink. B: Both sentences will be gray. C: Sentence 1 will be pink, Sentence 2 will be gray. D: Both sentences will be pink. E: The code does not make sense; will throw an error.
Easy Links	Solve
In the following HTML, what will be the color of link with class "mark"
Medium Let's Hack CSS Property	Solve
Consider the following HTML and CSS: Which additional CSS rule(s) will render the following image? Choose ALL that apply. A: div{ flex-direction : column; align-items : center; } B: div{ flex-direction : row; align-items: center; } C: div{ flex-direction: column; justify-content: center; } D: div{ flex-direction: row; justify-content: center; }
Hard Context re-renders React Context API Conditional Rendering Component Lifecycle State	Solve
Review the following React code: Pick the correct statements: A: The code renders 10 INDIAN RUPEE B: The code renders 10 SINGAPORE DOLLAR C: The code does not render anything and throws an error since JavaScript objects are not valid as React children D: When the currency portion is clicked, the parent component is re-rendered E: When the currency portion is clicked, parent component will skip the re-render because shouldComponentUpdate returns false F: Parent component can be converted to a functional component with memoization (useMemo or memo) to avoid the re-render
Medium Hooks with Conditional Rendering Hooks Conditional Rendering Event Handling	Solve
Consider a React functional component that utilizes various hooks and conditional rendering. The component is designed to fetch and display a list of items from an API, with the ability to filter the list based on user input. Here's the pseudo-code structure: In this component, which of the following is a potential issue or inefficiency? A: The component will re-render excessively due to the `setFilter` call. B: The `useEffect` hook will run on every render, causing performance issues. C: The `fetchItems` function may cause a memory leak if the component unmounts during the fetch. D: The `useMemo` hook for `filteredItems` is unnecessary and can be removed without impact. E: The component will fail to display items when the filter is cleared. F: There are no significant issues; the component is implemented optimally.
Medium Rhyme Reducer Reducer functions Immutable update patterns Lazy initialization	Solve
Which of the following React code snippets - triggers the reducer ‘rhymeReducer’ to update the ‘song’ value to ‘Jack and Jill’ - renders the updated ‘song’ value - does not produce any errors/warnings
Hard State Handling with Custom Hooks Custom Hooks Context API Event Handling	Solve
Consider a React application where a custom hook `useComplexState` is defined to manage a complex state object. The application also uses the Context API to pass down the state and dispatch function. Below is the pseudo-code for the custom hook and a component using it: Given this setup, which of the following statements best describes the potential issue or challenge with `MyComponent`? A: The component will not re-render when the global state changes. B: The `fetchData` function will cause an infinite loop of re-renders. C: The component will lose its state when the global state updates. D: There will be a memory leak due to improper cleanup in `useEffect`. E: The `dispatch` function from `useComplexState` will conflict with the global dispatch. F: There is no issue; the component is implemented correctly.
Easy Registration Queue Logic Queues	Solve
We want to register students for the next semester. All students have a receipt which shows the amount pending for the previous semester. A positive amount (or zero) represents that the student has paid extra fees, and a negative amount represents that they have pending fees to be paid. The students are in a queue for the registration. We want to arrange the students in a way such that the students who have a positive amount on the receipt get registered first as compared to the students who have a negative amount. We are given a queue in the form of an array containing the pending amount. For example, if the initial queue is [20, 70, -40, 30, -10], then the final queue will be [20, 70, 30, -40, -10]. Note that the sequence of students should not be changed while arranging them unless required to meet the condition. ⚠️⚠️⚠️ Note: - The first line of the input is the length of the array. The second line contains all the elements of the array. - The input is already parsed into an array of "strings" and passed to a function. You will need to convert string to integer/number type inside the function. - You need to "print" the final result (not return it) to pass the test cases. For the example discussed above, the input will be: 5 20 70 -40 30 -10 Your code needs to print the following to the standard output: 20 70 30 -40 -10
Medium Visitors Count Strings Logic	Solve
A manager hires a staff member to keep a record of the number of men, women, and children visiting the museum daily. The staff will note W if any women visit, M for men, and C for children. You need to write code that takes the string that represents the visits and prints the count of men, woman and children. The sequencing should be in decreasing order. Example: Input: WWMMWWCCC Expected Output: 4W3C2M Explanation: ‘W’ has the highest count, then ‘C’, then ‘M’. ⚠️⚠️⚠️ Note: - The input is already parsed and passed to a function. - You need to "print" the final result (not return it) to pass the test cases. - If the input is- “MMW”, then the expected output is "2M1W" since there is no ‘C’. - If any of them have the same count, the output should follow this order - M, W, C.

	🧐 Question	🔧 Skill
	Medium Async Await Promises Promises Async-Await	2 mins JavaScript	Solve
What will the following code output? A: 24 after 5 seconds and after another 5 seconds, another 24 B: 24 followed by another 24 immediately C: 24 immediately and another 24 after 5 seconds D: After 5 seconds, 24 and 24 E: Undefined F: NaN G: None of these
	Medium Bitcoin prices Axios Promises	2 mins JavaScript	Solve
Review the following JavaScript code and pick the correct options: Assume that the API returns a successful 200 response code and a JSON object as the response body. What would the value of ‘a’ be after the code is executed?
	Medium My Module Scope	2 mins JavaScript	Solve
What will the output of the following JavaScript code be?
	Medium Promise Resolve Promises Async-Await	2 mins JavaScript	Solve
What does the following code output?
	Easy Throw, Try, Async Promises Async-Await	2 mins JavaScript	Solve
What does the following JS code output?
	Easy Background Properties	2 mins HTML/CSS	Solve
Consider the following shorthand CSS example: background: #f7f7f7 url(jolie.jpg) no-repeat scroll 0px 0px; Which of the following show the individual background properties represented by the shorthand:
	Easy Colorful sentences	2 mins HTML/CSS	Solve
Our intern is writing a colorful blog post, and has written the following code. What colors will the sentences be? A: Sentence 1 will be gray, Sentence 2 will be pink. B: Both sentences will be gray. C: Sentence 1 will be pink, Sentence 2 will be gray. D: Both sentences will be pink. E: The code does not make sense; will throw an error.
	Easy Links	2 mins HTML/CSS	Solve
In the following HTML, what will be the color of link with class "mark"
	Medium Let's Hack CSS Property	3 mins HTML/CSS	Solve
Consider the following HTML and CSS: Which additional CSS rule(s) will render the following image? Choose ALL that apply. A: div{ flex-direction : column; align-items : center; } B: div{ flex-direction : row; align-items: center; } C: div{ flex-direction: column; justify-content: center; } D: div{ flex-direction: row; justify-content: center; }
	Hard Context re-renders React Context API Conditional Rendering Component Lifecycle State	3 mins React	Solve
Review the following React code: Pick the correct statements: A: The code renders 10 INDIAN RUPEE B: The code renders 10 SINGAPORE DOLLAR C: The code does not render anything and throws an error since JavaScript objects are not valid as React children D: When the currency portion is clicked, the parent component is re-rendered E: When the currency portion is clicked, parent component will skip the re-render because shouldComponentUpdate returns false F: Parent component can be converted to a functional component with memoization (useMemo or memo) to avoid the re-render
	Medium Hooks with Conditional Rendering Hooks Conditional Rendering Event Handling	3 mins React	Solve
Consider a React functional component that utilizes various hooks and conditional rendering. The component is designed to fetch and display a list of items from an API, with the ability to filter the list based on user input. Here's the pseudo-code structure: In this component, which of the following is a potential issue or inefficiency? A: The component will re-render excessively due to the `setFilter` call. B: The `useEffect` hook will run on every render, causing performance issues. C: The `fetchItems` function may cause a memory leak if the component unmounts during the fetch. D: The `useMemo` hook for `filteredItems` is unnecessary and can be removed without impact. E: The component will fail to display items when the filter is cleared. F: There are no significant issues; the component is implemented optimally.
	Medium Rhyme Reducer Reducer functions Immutable update patterns Lazy initialization	3 mins React	Solve
Which of the following React code snippets - triggers the reducer ‘rhymeReducer’ to update the ‘song’ value to ‘Jack and Jill’ - renders the updated ‘song’ value - does not produce any errors/warnings
	Hard State Handling with Custom Hooks Custom Hooks Context API Event Handling	3 mins React	Solve
Consider a React application where a custom hook `useComplexState` is defined to manage a complex state object. The application also uses the Context API to pass down the state and dispatch function. Below is the pseudo-code for the custom hook and a component using it: Given this setup, which of the following statements best describes the potential issue or challenge with `MyComponent`? A: The component will not re-render when the global state changes. B: The `fetchData` function will cause an infinite loop of re-renders. C: The component will lose its state when the global state updates. D: There will be a memory leak due to improper cleanup in `useEffect`. E: The `dispatch` function from `useComplexState` will conflict with the global dispatch. F: There is no issue; the component is implemented correctly.
	Easy Registration Queue Logic Queues	30 mins Coding	Solve
We want to register students for the next semester. All students have a receipt which shows the amount pending for the previous semester. A positive amount (or zero) represents that the student has paid extra fees, and a negative amount represents that they have pending fees to be paid. The students are in a queue for the registration. We want to arrange the students in a way such that the students who have a positive amount on the receipt get registered first as compared to the students who have a negative amount. We are given a queue in the form of an array containing the pending amount. For example, if the initial queue is [20, 70, -40, 30, -10], then the final queue will be [20, 70, 30, -40, -10]. Note that the sequence of students should not be changed while arranging them unless required to meet the condition. ⚠️⚠️⚠️ Note: - The first line of the input is the length of the array. The second line contains all the elements of the array. - The input is already parsed into an array of "strings" and passed to a function. You will need to convert string to integer/number type inside the function. - You need to "print" the final result (not return it) to pass the test cases. For the example discussed above, the input will be: 5 20 70 -40 30 -10 Your code needs to print the following to the standard output: 20 70 30 -40 -10
	Medium Visitors Count Strings Logic	30 mins Coding	Solve
A manager hires a staff member to keep a record of the number of men, women, and children visiting the museum daily. The staff will note W if any women visit, M for men, and C for children. You need to write code that takes the string that represents the visits and prints the count of men, woman and children. The sequencing should be in decreasing order. Example: Input: WWMMWWCCC Expected Output: 4W3C2M Explanation: ‘W’ has the highest count, then ‘C’, then ‘M’. ⚠️⚠️⚠️ Note: - The input is already parsed and passed to a function. - You need to "print" the final result (not return it) to pass the test cases. - If the input is- “MMW”, then the expected output is "2M1W" since there is no ‘C’. - If any of them have the same count, the output should follow this order - M, W, C.

	🧐 Question	🔧 Skill	💪 Difficulty	⌛ Time
	Async Await Promises Promises Async-Await	JavaScript	Medium	2 mins	Solve
What will the following code output? A: 24 after 5 seconds and after another 5 seconds, another 24 B: 24 followed by another 24 immediately C: 24 immediately and another 24 after 5 seconds D: After 5 seconds, 24 and 24 E: Undefined F: NaN G: None of these
	Bitcoin prices Axios Promises	JavaScript	Medium	2 mins	Solve
Review the following JavaScript code and pick the correct options: Assume that the API returns a successful 200 response code and a JSON object as the response body. What would the value of ‘a’ be after the code is executed?
	My Module Scope	JavaScript	Medium	2 mins	Solve
What will the output of the following JavaScript code be?
	Promise Resolve Promises Async-Await	JavaScript	Medium	2 mins	Solve
What does the following code output?
	Throw, Try, Async Promises Async-Await	JavaScript	Easy	2 mins	Solve
What does the following JS code output?
	Background Properties	HTML/CSS	Easy	2 mins	Solve
Consider the following shorthand CSS example: background: #f7f7f7 url(jolie.jpg) no-repeat scroll 0px 0px; Which of the following show the individual background properties represented by the shorthand:
	Colorful sentences	HTML/CSS	Easy	2 mins	Solve
Our intern is writing a colorful blog post, and has written the following code. What colors will the sentences be? A: Sentence 1 will be gray, Sentence 2 will be pink. B: Both sentences will be gray. C: Sentence 1 will be pink, Sentence 2 will be gray. D: Both sentences will be pink. E: The code does not make sense; will throw an error.
	Links	HTML/CSS	Easy	2 mins	Solve
In the following HTML, what will be the color of link with class "mark"
	Let's Hack CSS Property	HTML/CSS	Medium	3 mins	Solve
Consider the following HTML and CSS: Which additional CSS rule(s) will render the following image? Choose ALL that apply. A: div{ flex-direction : column; align-items : center; } B: div{ flex-direction : row; align-items: center; } C: div{ flex-direction: column; justify-content: center; } D: div{ flex-direction: row; justify-content: center; }
	Context re-renders React Context API Conditional Rendering Component Lifecycle State	React	Hard	3 mins	Solve
Review the following React code: Pick the correct statements: A: The code renders 10 INDIAN RUPEE B: The code renders 10 SINGAPORE DOLLAR C: The code does not render anything and throws an error since JavaScript objects are not valid as React children D: When the currency portion is clicked, the parent component is re-rendered E: When the currency portion is clicked, parent component will skip the re-render because shouldComponentUpdate returns false F: Parent component can be converted to a functional component with memoization (useMemo or memo) to avoid the re-render
	Hooks with Conditional Rendering Hooks Conditional Rendering Event Handling	React	Medium	3 mins	Solve
Consider a React functional component that utilizes various hooks and conditional rendering. The component is designed to fetch and display a list of items from an API, with the ability to filter the list based on user input. Here's the pseudo-code structure: In this component, which of the following is a potential issue or inefficiency? A: The component will re-render excessively due to the `setFilter` call. B: The `useEffect` hook will run on every render, causing performance issues. C: The `fetchItems` function may cause a memory leak if the component unmounts during the fetch. D: The `useMemo` hook for `filteredItems` is unnecessary and can be removed without impact. E: The component will fail to display items when the filter is cleared. F: There are no significant issues; the component is implemented optimally.
	Rhyme Reducer Reducer functions Immutable update patterns Lazy initialization	React	Medium	3 mins	Solve
Which of the following React code snippets - triggers the reducer ‘rhymeReducer’ to update the ‘song’ value to ‘Jack and Jill’ - renders the updated ‘song’ value - does not produce any errors/warnings
	State Handling with Custom Hooks Custom Hooks Context API Event Handling	React	Hard	3 mins	Solve
Consider a React application where a custom hook `useComplexState` is defined to manage a complex state object. The application also uses the Context API to pass down the state and dispatch function. Below is the pseudo-code for the custom hook and a component using it: Given this setup, which of the following statements best describes the potential issue or challenge with `MyComponent`? A: The component will not re-render when the global state changes. B: The `fetchData` function will cause an infinite loop of re-renders. C: The component will lose its state when the global state updates. D: There will be a memory leak due to improper cleanup in `useEffect`. E: The `dispatch` function from `useComplexState` will conflict with the global dispatch. F: There is no issue; the component is implemented correctly.
	Registration Queue Logic Queues	Coding	Easy	30 mins	Solve
We want to register students for the next semester. All students have a receipt which shows the amount pending for the previous semester. A positive amount (or zero) represents that the student has paid extra fees, and a negative amount represents that they have pending fees to be paid. The students are in a queue for the registration. We want to arrange the students in a way such that the students who have a positive amount on the receipt get registered first as compared to the students who have a negative amount. We are given a queue in the form of an array containing the pending amount. For example, if the initial queue is [20, 70, -40, 30, -10], then the final queue will be [20, 70, 30, -40, -10]. Note that the sequence of students should not be changed while arranging them unless required to meet the condition. ⚠️⚠️⚠️ Note: - The first line of the input is the length of the array. The second line contains all the elements of the array. - The input is already parsed into an array of "strings" and passed to a function. You will need to convert string to integer/number type inside the function. - You need to "print" the final result (not return it) to pass the test cases. For the example discussed above, the input will be: 5 20 70 -40 30 -10 Your code needs to print the following to the standard output: 20 70 30 -40 -10
	Visitors Count Strings Logic	Coding	Medium	30 mins	Solve
A manager hires a staff member to keep a record of the number of men, women, and children visiting the museum daily. The staff will note W if any women visit, M for men, and C for children. You need to write code that takes the string that represents the visits and prints the count of men, woman and children. The sequencing should be in decreasing order. Example: Input: WWMMWWCCC Expected Output: 4W3C2M Explanation: ‘W’ has the highest count, then ‘C’, then ‘M’. ⚠️⚠️⚠️ Note: - The input is already parsed and passed to a function. - You need to "print" the final result (not return it) to pass the test cases. - If the input is- “MMW”, then the expected output is "2M1W" since there is no ‘C’. - If any of them have the same count, the output should follow this order - M, W, C.

Reason #4

1200+ customers in 75 countries

Avec Adaface, nous avons pu optimiser notre processus de sélection initiale de plus de 75 %, libérant ainsi un temps précieux tant pour les responsables du recrutement que pour notre équipe d'acquisition de talents !

Brandon Lee, Chef du personnel, Love, Bonito

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Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment JavaScript, HTML / CSS & React Test in your hiring process is that it is an elimination tool, not a selection tool. In other words: you want to use the test to eliminate the candidates who do poorly on the test, not to select the candidates who come out at the top. While they are super valuable, pre-employment tests do not paint the entire picture of a candidate’s abilities, knowledge, and motivations. Multiple easy questions are more predictive of a candidate's ability than fewer hard questions. Harder questions are often "trick" based questions, which do not provide any meaningful signal about the candidate's skillset.

Science behind Adaface tests

Reason #6

1 click candidate invites

Email invites: You can send candidates an email invite to the JavaScript, HTML / CSS & React Test from your dashboard by entering their email address.

Public link: You can create a public link for each test that you can share with candidates.

API or integrations: You can invite candidates directly from your ATS by using our pre-built integrations with popular ATS systems or building a custom integration with your in-house ATS.

Reason #7

Detailed scorecards & benchmarks

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Reason #8

High completion rate

Adaface tests are conversational, low-stress, and take just 25-40 mins to complete.

This is why Adaface has the highest test-completion rate (86%), which is more than 2x better than traditional assessments.

Reason #9

Advanced Proctoring

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About the JavaScript, HTML/CSS & React Assessment Test

Why you should use Pre-employment JavaScript, HTML/CSS & React Online Test?

The JavaScript, HTML / CSS & React Test makes use of scenario-based questions to test for on-the-job skills as opposed to theoretical knowledge, ensuring that candidates who do well on this screening test have the relavant skills. The questions are designed to covered following on-the-job aspects:

Comprendre la syntaxe et fondamentaux JavaScript
Connaissance des fonctionnalités et de l'utilisation ES6
Capacité à écrire le code JavaScript orienté objet
Expérience dans la gestion des API et passer des appels HTTP
Maîtrise de travailler avec nœud asynchrone.js et promesses
Bâtiment des composants réutilisables avec JSX à réagir
Comprendre le cycle de vie des composants React
Expertise dans l'utilisation des crochets React et des composants fonctionnels
Solide compréhension du modèle de boîte CSS
Capacité à créer des dispositions flexibles à l'aide de Flexbox et Grid

Once the test is sent to a candidate, the candidate receives a link in email to take the test. For each candidate, you will receive a detailed report with skills breakdown and benchmarks to shortlist the top candidates from your pool.

What topics are covered in the JavaScript, HTML/CSS & React Online Test?

js es6
js es6 (Ecmascript 2015) fait référence au fait que le Dernière version de la langue javascript. Il comprend de nouvelles fonctionnalités et des améliorations de syntaxe, telles que les fonctions de flèche, les classes, les modules, les littéraux de modèle, la destructeur et la syntaxe de propagation. Cette compétence est mesurée dans le test pour évaluer la compétence du candidat en utilisant les caractéristiques modernes et plus efficaces de JavaScript.
js oops
js oops (programmation orientée objet) fait référence à la réflexion sur le fait que le Paradigme de l'organisation et de la structuration du code à l'aide d'objets et de classes. Elle implique des concepts tels que l'encapsulation, l'héritage et le polymorphisme. Cette compétence est mesurée dans le test pour évaluer la capacité du candidat à concevoir et à mettre en œuvre des solutions orientées objet en JavaScript, qui est largement utilisée dans le développement Web.
Gestion des API
Les API de manipulation impliquent La capacité d'interagir avec et de consommer des interfaces de programmation d'applications (API). Il comprend la création de demandes HTTP, l'analyse des données JSON, le traitement de l'authentification et le traitement des réponses. Cette compétence est mesurée dans le test pour évaluer les connaissances du candidat et l'expérience pratique dans l'intégration des applications Web avec des services externes via les interactions API.
node asynchrone.js et promesses
node asynchrone.js.js fait référence à la possibilité d'écrire du code asynchrone à l'aide de Node.js, un environnement d'exécution JavaScript. Il s'agit d'utiliser des rappels, des promesses et des asynchrones / attendre pour gérer efficacement les opérations asynchrones. Cette compétence est mesurée dans le test pour évaluer la compétence du candidat en écrivant le code JavaScript non bloquant et évolutif dans un environnement Node.js.
Composants de construction avec JSX
Composants de construction avec JSX implique la création de composants d'interface utilisateur réutilisables à l'aide de la syntaxe JSX, qui est une extension de JavaScript couramment utilisé dans les applications React. Il comprend des concepts tels que la composition des composants, les accessoires et la gestion de l'État. Cette compétence est mesurée dans le test pour évaluer la capacité du candidat à développer des composants d'interface utilisateur modulaires et réutilisables en utilisant JSX en conjonction avec JavaScript.
React Component Lifecycle </H4> <p> Le cycle de vie des composants React fait référence au différent étapes et méthodes impliquées dans le cycle de vie d'un composant React, tel que le montage, la mise à jour et le non-respect. Il comprend des méthodes comme ComponentDidMount, ComponentDiDupDate et ComponentWilLunMount. Cette compétence est mesurée dans le test pour évaluer la compréhension du candidat et les connaissances pratiques de la façon dont les composants réactifs se comportent et interagissent avec le DOM pendant leur cycle de vie. </p> <h4> Réagir des crochets et des composants fonctionnels
React Hooks et les composants fonctionnels se réfèrent à la nouvelle fonctionnalité introduite dans React 16.8 qui permet aux développeurs d'utiliser l'état et d'autres fonctionnalités React sans écrire de classe. Il s'agit d'utiliser des crochets tels que UseState, UseEffect, UseContext et Useref. Cette compétence est mesurée dans le test pour évaluer la compétence du candidat en utilisant des crochets et des composants fonctionnels pour créer des applications de réaction évolutives et maintenables.
Modèle de boîte CSS
Le modèle de boîte CSS fait référence au concept de la façon dont les éléments sont rendus et structurés en CSS. Il comprend des propriétés telles que la largeur, la hauteur, le rembourrage, la marge et la bordure. Cette compétence est mesurée dans le test pour évaluer la compréhension du candidat de la façon dont les éléments sont dimensionnés, positionnés et espacés en CSS, ce qui est crucial pour créer des dispositions Web visuellement attrayantes et réactives.
Flexbox et mise en page de grille </ / H4> <p> Flexbox et les dispositions de grille sont des modèles de mise en page CSS qui fournissent des moyens flexibles et puissants d'organiser des éléments d'une page Web. Flexbox est une disposition unidimensionnelle, tandis que la grille est une disposition bidimensionnelle. Cette compétence est mesurée dans le test pour évaluer la capacité du candidat à créer des dispositions Web complexes et réactives en utilisant ces techniques de disposition CSS modernes. </p> <h4> CSS réactif
CSS réactif fait référence à la pratique de la création Pages Web qui peuvent s'adapter et s'adapter à différentes tailles d'écran et appareils. Il s'agit d'utiliser des requêtes multimédias, des unités flexibles (telles que des pourcentages et des unités de la fenêtre) et des cadres CSS comme Bootstrap. Cette compétence est mesurée dans le test pour évaluer la capacité du candidat à développer des applications Web qui offrent une expérience utilisateur sans couture et optimisée sur divers appareils.
Programmation JavaScript
La programmation JavaScript se réfère à l'ensemble Capacité à rédiger le code JavaScript propre, efficace et maintenable. Il comprend des concepts tels que l'organisation du code, la gestion des erreurs, le débogage, l'optimisation des performances et la documentation du code. Cette compétence est mesurée dans le test pour évaluer la compétence globale et la compétence du candidat dans la programmation JavaScript, qui est essentielle pour tout rôle de développement Web.
Full list of covered topics
The actual topics of the questions in the final test will depend on your job description and requirements. However, here's a list of topics you can expect the questions for JavaScript, HTML / CSS & React Test to be based on.
Variables
Types de données
Opérations arithmétiques
Expressions conditionnelles
Boucles
Les fonctions
Tableaux
Objets
La gestion des erreurs
Portée lexicale
Fermetures
Levage
Prototypes
Des classes
Héritage
Modules ES6
Fonctions flèches
Destructeur
Modèle littéraux
Opérateur de propagation
Paramètres de repos
Promettre un objet
Asynchrone / attendre
Ajax
API récupérer
Json
Manipulation de Dom
Gestion des événements
Stockage du navigateur
React Composants
JSX
Accessoires
État
Méthodes de cycle de vie
Réagir des crochets
API de contexte
Styling in React
Sélecteurs CSS
Modèle de boîte
Flexion
Disposition de la grille
Requêtes médiatiques
Conception réactive
Débogage
Tests unitaires
Optimisation du code
Conception d'algorithme
Structures de données
La gestion des erreurs
Revue de code

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What roles can I use the JavaScript, HTML/CSS & React Online Test for?

Développeur complet
Développeur JavaScript
Développeur réagi
Ingénieur avant

How is the JavaScript, HTML/CSS & React Online Test customized for senior candidates?

For intermediate/ experienced candidates, we customize the assessment questions to include advanced topics and increase the difficulty level of the questions. This might include adding questions on topics like

Expérience dans la création de conceptions réactives avec CSS
Maîtrise de la programmation JavaScript
Connaissance avancée des frameworks et bibliothèques JavaScript
Expérience avec des outils de construction frontale comme WebPack ou Babel
Capacité à optimiser les performances du Web et à optimiser le rendu
Connaissance des bibliothèques de gestion de l'État telles que Redux ou MOBX
Expérience avec les frameworks de test comme la plaisanterie ou l'enzyme
Capacité à s'intégrer aux API et services tiers
Compréhension des systèmes de contrôle de version comme Git
Expérience dans le débogage et le dépannage des problèmes complexes
Solides compétences en résolution de problèmes et capacité à analyser les exigences

The coding question for experienced candidates will be of a higher difficulty level to evaluate more hands-on experience.

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Les responsables du recrutement ont estimé que grâce aux questions techniques qu'ils ont posées lors des entretiens avec le panel, ils étaient en mesure de déterminer quels candidats avaient obtenu de meilleurs scores et de se différencier de ceux qui avaient obtenu de moins bons résultats. Ils sont très satisfait avec la qualité des candidats présélectionnés lors de la sélection Adaface.

85%

réduction du temps de dépistage

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JavaScript, HTML/CSS & React Hiring Test FAQ

Puis-je combiner plusieurs compétences en une seule évaluation personnalisée?

Oui absolument. Les évaluations personnalisées sont configurées en fonction de votre description de poste et comprendront des questions sur toutes les compétences indispensables que vous spécifiez.

Avez-vous en place des fonctionnalités anti-chétion ou de proctorisation?

Nous avons les fonctionnalités anti-modification suivantes en place:

Questions non googléables
IP Proctoring
Proctoring Web
Proctoring webcam
Détection du plagiat
navigateur sécurisé

En savoir plus sur les fonctionnalités de Proctoring.

Comment interpréter les résultats des tests?

La principale chose à garder à l'esprit est qu'une évaluation est un outil d'élimination, pas un outil de sélection. Une évaluation des compétences est optimisée pour vous aider à éliminer les candidats qui ne sont pas techniquement qualifiés pour le rôle, il n'est pas optimisé pour vous aider à trouver le meilleur candidat pour le rôle. Ainsi, la façon idéale d'utiliser une évaluation consiste à décider d'un score de seuil (généralement 55%, nous vous aidons à bencher) et à inviter tous les candidats qui marquent au-dessus du seuil pour les prochains cycles d'entrevue.

Pour quel niveau d'expérience puis-je utiliser ce test?

Chaque évaluation ADAFACE est personnalisée à votre description de poste / Persona de candidats idéaux (nos experts en la matière choisiront les bonnes questions pour votre évaluation de notre bibliothèque de 10000+ questions). Cette évaluation peut être personnalisée pour tout niveau d'expérience.

Chaque candidat reçoit-il les mêmes questions?

Oui, cela vous permet de comparer les candidats. Les options pour les questions du MCQ et l'ordre des questions sont randomisées. Nous avons Anti-Cheating / Proctoring en place. Dans notre plan d'entreprise, nous avons également la possibilité de créer plusieurs versions de la même évaluation avec des questions de niveaux de difficulté similaires.

Je suis candidat. Puis-je essayer un test de pratique?

Non. Malheureusement, nous ne soutenons pas les tests de pratique pour le moment. Cependant, vous pouvez utiliser nos exemples de questions pour la pratique.