Why you should use ReactJs Online Test?

The React.js online 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: Inhoud bouwen met JSX Communiceren met rekwisieten Class-gebaseerde componenten React State Lifecycle -methoden Gebruikersinvoer afhandelen met formulieren en gebeurtenissen API -aanvragen maken met React Lijsten met records bouwen Refs gebruiken voor DOM -toegang Haken begrijpen in React

ReactJs Online Test

About the test:

De React-test maakt gebruik van scenario-gebaseerde MCQ-vragen om het begrip van React Component Lifecycle te evalueren, de mogelijkheid om te werken met JSX, gebruikersgebeurtenissen, reactstatus, functionele componenten en haken om dynamische react-toepassingen te maken. De test heeft JavaScript MCQ's om ES6 -basisprincipes, DOM, Fetch, beloften en async / wachten te beoordelen. De test omvat coderingsvragen om praktische JavaScript-programmeervaardigheden te evalueren.

Covered skills:

Inhoud bouwen met JSX
Class-gebaseerde componenten
Lifecycle -methoden
API -aanvragen maken met React
Refs gebruiken voor DOM -toegang
Component en route -navigatie
Integratie van React met staatsbeheerbibliotheken
Het contextsysteem gebruiken met React

Communiceren met rekwisieten
React State
Gebruikersinvoer afhandelen met formulieren en gebeurtenissen
Lijsten met records bouwen
Haken begrijpen in React
Een react -app implementeren
Authenticatie afhandelen met React

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9 reasons why

Adaface ReactJs Test is the most accurate way to shortlist ReactJs -ontwikkelaars

Reason #1

Tests for on-the-job skills

The ReactJs 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:

Inhoud bouwen met JSX
Communiceren met rekwisieten
Implementatie van op klassen gebaseerde componenten
React State beheren
Werken met React Lifecycle -methoden
Gebruikersinvoer afhandelen met formulieren en gebeurtenissen
API -aanvragen maken met React
Lijsten met records bouwen
Toegang tot DOM met Refs
Haken begrijpen in React
Component en route -navigatie
Een react -app implementeren
Integratie van React met staatsbeheerbibliotheken
Authenticatie afhandelen met React
Het contextsysteem gebruiken met React

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

Dit zijn slechts een klein monster uit onze bibliotheek met meer dan 10.000 vragen. De werkelijke vragen hierover React.js online test zal niet-googelbaar zijn.

🧐 Question
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.
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 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
	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.
	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 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
	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.
	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?
	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

Met Adaface konden we ons eerste screeningproces met ruim 75% optimaliseren, waardoor kostbare tijd vrijkwam voor zowel de rekruteringsmanagers als ons talentacquisitieteam!

Brandon Lee, Hoofd Mensen, Love, Bonito

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Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment React.js online 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 React.js online 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

Learn more

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About the ReactJs Assessment Test

Why you should use Pre-employment ReactJs Online Test?

The React.js online 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:

Inhoud bouwen met JSX
Communiceren met rekwisieten
Class-gebaseerde componenten
React State
Lifecycle -methoden
Gebruikersinvoer afhandelen met formulieren en gebeurtenissen
API -aanvragen maken met React
Lijsten met records bouwen
Refs gebruiken voor DOM -toegang
Haken begrijpen in React

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 ReactJs Online Test?

klasse gebaseerde componenten
klassencomponenten zijn een manier om herbruikbare componenten te definiëren en te creëren in React. Ze worden geïmplementeerd als JavaScript -klassen die de basisreactcomponentklasse uitbreiden. Deze vaardigheid moet in de test worden gemeten om het begrip van een kandidaat van klassengebaseerde componentsyntaxis te beoordelen en hun vermogen om de componentstatus te maken en te beheren met behulp van klassemethoden.
react status
react status Verwijst naar het door React verstrekte staatsbeheersysteem. Status stelt componenten in staat om hun eigen gegevens te bewaren en te beheren, die automatisch kunnen worden bijgewerkt en weergegeven in reactie op wijzigingen. Deze vaardigheid moet in de test worden gemeten om het begrip van een kandidaat van staatsmanagement te evalueren in React en hun vermogen om dynamische en interactieve UI -componenten te maken die reageren op gebruikersacties en gegevensveranderingen.
Lifecycle -methoden
Lifecycle -methoden in React zijn speciale methoden die automatisch op specifieke punten worden aangeroepen tijdens de levenscyclus van een component, zoals wanneer deze wordt gemonteerd of bijgewerkt. Ze bieden haken voor het uitvoeren van taken zoals het ophalen van gegevens, het abonneren op gebeurtenissen of het bijwerken van de status van de component. Deze vaardigheid moet in de test worden gemeten om de bekendheid van een kandidaat met de levenscyclusmethoden in React te beoordelen en hun vermogen om ze effectief te gebruiken om componentgedrag te beheersen en te beheren.
om gebruikersinvoer met vormen en gebeurtenissen te verwerken </h4 > <p> Het omgaan met gebruikersinvoer met formulieren en gebeurtenissen omvat het vastleggen en verwerken van gebruikersinvoer in REACT. Deze vaardigheid moet in de test worden gemeten om het vermogen van een kandidaat te evalueren om gecontroleerde formuliercomponenten te maken, formulierinzendingen af te handelen en te reageren op gebruikersgebeurtenissen zoals klikken, toetsdrukken en muisbewegingen. </p> <h4> API -aanvragen maken met API -aanvragen met React
API -aanvragen met React maken omvat het ophalen van gegevens van externe API's en het integreren in reactcomponenten. Deze vaardigheid moet in de test worden gemeten om de kennis van een kandidaat te beoordelen over het gebruik van tools zoals de Fetch API of Axios om asynchrone verzoeken te doen, antwoorden te verwerken en de componentstatus bij te werken met de opgehaalde gegevens.
Bouwlijsten met records
Bouwlijsten met records in React verwijst naar het weergeven van dynamische lijsten met items op basis van gegevens. Deze vaardigheid moet in de test worden gemeten om het vermogen van een kandidaat te evalueren om een scala aan gegevens in kaart te brengen, dynamische lijstcomponenten te genereren en ze efficiënt weer te geven in React.
met behulp van refs voor DOM Access </h4> < P> Het gebruik van refs voor DOM -toegang biedt directe toegang tot de onderliggende DOM -elementen in React -componenten. Refs bieden een manier om imperatief te communiceren met de DOM, zoals het verkrijgen van de waarde van een invoerveld of het activeren van een focusgebeurtenis. Deze vaardigheid moet in de test worden gemeten om het begrip van een kandidaat van refs en hun vermogen om ze effectief te gebruiken te beoordelen voor DOM -manipulatie en toegang. </p> <h4> Inzicht in haken in React
Inzicht in haken in React gaat over het gebruik van de hooks -functie die is geïntroduceerd in React om functionele componenten te schrijven met staats- en levenscyclusfuncties. Hooks bieden een manier om React -functies zoals status- en levenscyclusmethoden in functionele componenten te gebruiken, waardoor ze gemakkelijker te schrijven, te begrijpen en te testen te worden. Deze vaardigheid moet in de test worden gemeten om de bekendheid van een kandidaat met haken te evalueren en hun vermogen om ze te benutten om functionele, statefeuze componenten in React te bouwen. Route -navigatie in React omvat het beheer van de navigatie en routing binnen een react -toepassing. Deze vaardigheid moet in de test worden gemeten om het begrip van een kandidaat van React -router of andere routeringsbibliotheken te beoordelen, en hun vermogen om te navigeren tussen verschillende componenten of routes op basis van gebruikersinteracties of programmatische logica.
een react -app implementeren
Het implementeren van een React -app betekent dat een React -applicatie beschikbaar is voor gebruikers door deze op een hostingplatform of server te implementeren. This skill should be measured in the test to evaluate a candidate's knowledge of the deployment process for React applications, including build optimization, environment configuration, and deployment strategies.
Integrating React with State management libraries</h4>< P> Integreren van React met staatsmanagementbibliotheken omvat het gebruik van bibliotheken zoals Redux of MOBX om de wereldwijde staat van een React -toepassing te beheren. Deze vaardigheid moet in de test worden gemeten om de bekendheid van een kandidaat met staatsbeheerconcepten te beoordelen en hun vermogen om staatsbeheerbibliotheken te integreren en te gebruiken in react -applicaties om complexe gegevensstromen en gedeelde status te beheren. </p> <h4> verificatie met React.
Verzekering van authenticatie met React omvat het implementeren van gebruikersauthenticatie en autorisatie in een React -toepassing. Deze vaardigheid moet in de test worden gemeten om het vermogen van een kandidaat te evalueren om authenticatiestromen te implementeren, gebruikerssessies af te handelen, routes te beschermen en gebruikersreferenties en authenticatietokens binnen een React -toepassing veilig te beheren.
met behulp van het contextsysteem met React
Door het contextsysteem met REACT te gebruiken, kan het delen van gegevens of status tussen componenten delen zonder rekwisieten door elk niveau van de componentboom te geven. Context biedt een manier om toegang te krijgen tot een waarde of status van een component in de contextboom. Deze vaardigheid moet in de test worden gemeten om het begrip van een kandidaat van de context-API in React te beoordelen en hun vermogen om deze te gebruiken om gegevens te delen en de toepassingsbrede toestand op een efficiëntere en schaalbare manier te beheren.
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 React.js online test to be based on.
JSX Syntax
JSX -uitdrukkingen
Componentweergave
Component Props
Component samenstelling
Componentstatus
Staat- en rekwisieten updates
Lifecycle -methoden: ComponentDidmount
Lifecycle -methoden: ComponentDidUpdate
Lifecycle -methoden: componentwillunmount
Evenementbehandeling
Vormafhandeling
API -aanvragen met Fetch
API -aanvragen met Axios
Data manipulatie
Lijsten weergeven
DOM -toegang met scheidsrechters
Usestate begrijpen
Inzicht in gebruikseffect
React Router
React Router: routeparameters
React Router: Redirects
Implementatieopties
Integratie met Redux
Integratie met MOBX
Gebruikersverificatie
Contextsysteem: provider en consument
Contextsysteem: usecontext
Contextsysteem: UserEducer
Contextsysteem: aangepaste haken
Contextsysteem: meerdere contexten

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What roles can I use the ReactJs Online Test for?

ReactJs -ontwikkelaar
Software Developer (React)
Volledige stack webontwikkelaar
Front End Engineer (React)
Software Engineer (ReactJS)
Webontwikkelaar
Senior ReactJS -ontwikkelaar
JavaScript Engineer (React)
Senior Web Engineer

How is the ReactJs 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

Component en route -navigatie
Een react -app implementeren
Integratie van React met staatsbeheerbibliotheken
Authenticatie afhandelen met React
Het contextsysteem gebruiken met React
Reactcomponenten testen
Prestatie -optimalisatie in React
Server-side rendering met React
Frontend beveiliging in React
Progressieve web -apps bouwen met React

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

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De rekruteringsmanagers waren van mening dat ze door de technische vragen die ze tijdens de panelgesprekken stelden, konden zien welke kandidaten beter scoorden, en onderscheidden ze zich met degenen die niet zo goed scoorden. Zij zijn zeer tevreden met de kwaliteit van de kandidaten op de shortlist van de Adaface-screening.

85%

Vermindering van de screeningstijd

Bekijk volledige case study

ReactJs Hiring Test Veelgestelde vragen

Kan ik React en Typescript in dezelfde test evalueren?

Ja. Nadat u naar een betaald plan bent verhuisd, kunt u een aangepaste beoordeling aanvragen. We passen de beoordeling aan op basis van uw functiebeschrijving en ondersteuning bij het evalueren van meerdere vaardigheden in dezelfde beoordeling.

Can I evaluate React, JavaScript and HTML/ CSS in the same test?

Yes. The test already comes with MCQs to evaluate JavaScript fundamentals and coding questions to evaluate hands-on JavaScript programming skills. We can customize the test to include MCQ questions to evaluate HTML/ CSS skills.

Kan ik meerdere vaardigheden combineren in één aangepaste beoordeling?

Ja absoluut. Aangepaste beoordelingen zijn opgezet op basis van uw functiebeschrijving en bevatten vragen over alle must-have vaardigheden die u opgeeft.

Heeft u functies tegen latere of proctoring op hun plaats?

We hebben de volgende anti-cheating-functies op zijn plaats:

Niet-googelbare vragen
IP Proctoring
Web Proctoring
Webcam Proctoring
Plagiaatdetectie
Beveilig browser

Lees meer over de Proctoring -functies.

Hoe interpreteer ik testscores?

Het belangrijkste om in gedachten te houden is dat een beoordeling een eliminatietool is, geen selectietool. Een vaardighedenbeoordeling is geoptimaliseerd om u te helpen kandidaten te elimineren die niet technisch gekwalificeerd zijn voor de rol, het is niet geoptimaliseerd om u te helpen de beste kandidaat voor de rol te vinden. Dus de ideale manier om een beoordeling te gebruiken is om een drempelscore te bepalen (meestal 55%, wij helpen u benchmark) en alle kandidaten uit te nodigen die boven de drempel scoren voor de volgende interviewrondes.

Voor welk ervaringsniveau kan ik deze test gebruiken?

Elke ADAFACE -beoordeling is aangepast aan uw functiebeschrijving/ ideale kandidaatpersonage (onze experts van het onderwerp zullen de juiste vragen kiezen voor uw beoordeling uit onze bibliotheek van 10000+ vragen). Deze beoordeling kan worden aangepast voor elk ervaringsniveau.

Krijgt elke kandidaat dezelfde vragen?

Ja, het maakt het veel gemakkelijker voor u om kandidaten te vergelijken. Opties voor MCQ -vragen en de volgorde van vragen worden gerandomiseerd. We hebben anti-cheating/proctoring functies. In ons bedrijfsplan hebben we ook de optie om meerdere versies van dezelfde beoordeling te maken met vragen over vergelijkbare moeilijkheidsniveaus.