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About the test:

The Front-end Developer Online Test uses scenario-based MCQs to evaluate candidates on their knowledge of front-end web development, which involves creating and implementing user interfaces using HTML, CSS, and JavaScript. The test assesses candidates' proficiency in responsive design, layout and grid systems, client-side scripting, JavaScript frameworks such as React or Angular, cross-browser compatibility, and web performance optimization.

Covered skills:

  • HTML5
  • JQuery - Application
  • AngularJS Application
  • CSS
See all covered skills

9 reasons why
9 reasons why

Adaface Front End Developer Online Test is the most accurate way to shortlist Front End Developers



Reason #1

Tests for on-the-job skills

前端开发人员测试可帮助招聘人员和招聘经理从简历中确定合格的候选人,并有助于做出客观的招聘决策。它减少了采访太多候选人的管理开销,并通过过滤不合格的候选人节省了时间。

Adaface前端开发人员在线测试屏幕候选典型技能招聘人员寻找前端开发人员角色:

  • HTML,CSS和JavaScript的专业知识
  • 在关键反应/角度的想法中得到充分的精力
  • 复杂的代码库,系统和源代码管理系统(例如git)的工作知识
  • 事先在项目交付和改进方面的经验
  • 关键的面向用户系统的技能
  • UNIX/Linux体验,包括基本命令和脚本
  • 英语能力与工程经理合作

招聘人员和招聘经理可以使用此评估产生的见解,以确定前端开发人员角色的最佳候选人。反交换功能使您能够在线进行评估。前端开发人员在线测试非常适合帮助招聘人员确定哪些候选人具有在工作中表现出色的技能。

Reason #2

No trick questions

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.

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 ->
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.

这些只是我们库中有10,000多个问题的一个小样本。关于此的实际问题 Front End Developer Online Test 将是不可行的.

🧐 Question

Medium

Form Logs
Forms
Solve
A web app for a popular AI conference (conducted in New York, with attendees from around the world) uses a signup/login page before users can access their dashboard. The signup/login page uses a form for users to input details and submit. The details are then sent to the backend service for processing. All user actions are logged in a log server. Senior Frontend Engineer, Musk, observed patterns in the issues users are facing with the the web app. Here are the two common patterns that Musk observed in the issues that have been occurring for most users:
 image
 image
Which of the following should Musk do to enhance the user experience with the page?

A: Implement validation using JS event listeners on client-side (e.g., on input or change)
B: Utilize HTML5 built-in form validation attributes (e.g., required, pattern)
C: Use server-side validation and refresh the page on form submission
D: Use a serverless function that processes the user’s form details, saves the user’s entries in the database and responds with validation data

Medium

Interactive Application
JavaScript Rendering
Solve
A senior front-end engineer is tasked with optimizing the loading speed of a web application. The current bottleneck is the large number of JavaScript files that must be downloaded before the application becomes interactive. The engineer noticed that the browser spends a lot of time parsing and executing the JS code before making the application interactive. Which of the following techniques should the engineer apply to address this issue?

Medium

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:
 image

Easy

Colorful sentences
Solve
Our intern is writing a colorful blog post, and has written the following code. What colors will the sentences be?
 image
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.

Medium

Links
Solve
In the following HTML, what will be the color of link with class "mark"
 image

Medium

Let's Hack
CSS Property
Solve
Consider the following HTML and CSS:
 image
 image
Which additional CSS rule(s) will render the following image? Choose ALL that apply.
 image
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;
}

Medium

Async Await Promises
Promises
Async-Await
Solve
What will the following code output?
 image
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

Easy

Bitcoin prices
Axios
Promises
Solve
Review the following JavaScript code and pick the correct options: 
 image
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?
 image
 image

Medium

Promise Resolve
Promises
Async-Await
Solve
What does the following code output? 
 image

Easy

Throw, Try, Async
Promises
Async-Await
Solve
What does the following JS code output?
 image

Easy

Registration Queue
Logic
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

Longest Road
logic
hashmaps
Solve
A startup company E-Motors is building driverless automated cars. The car contains a sensor that checks the road quality for the next N meters to decide the optimal speed at which the cars should move. We are given recorded data by the sensor in the form of an array, where each element of the array is the rating given to 1 meter of the road in sequence. 

The rating given by the sensor is from 1 to 100, where 100 represents the road with the best condition, and any rating above 60 is optimal. Find the longest stretch of road in meters that is categorized as optimal by the sensor.

The input is an array of "strings" which needs to be converted from string to integer/number inside the function.

Medium

Visitors Count
Strings
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

Form Logs
Forms
3 mins
Frontend
Solve

Medium

Interactive Application
JavaScript Rendering
2 mins
Frontend
Solve

Medium

Background Properties
2 mins
HTML/CSS
Solve

Easy

Colorful sentences
2 mins
HTML/CSS
Solve

Medium

Links
2 mins
HTML/CSS
Solve

Medium

Let's Hack
CSS Property
3 mins
HTML/CSS
Solve

Medium

Async Await Promises
Promises
Async-Await
2 mins
JavaScript
Solve

Easy

Bitcoin prices
Axios
Promises
2 mins
JavaScript
Solve

Medium

My Module
Scope
2 mins
JavaScript
Solve

Medium

Promise Resolve
Promises
Async-Await
2 mins
JavaScript
Solve

Easy

Throw, Try, Async
Promises
Async-Await
2 mins
JavaScript
Solve

Easy

Registration Queue
Logic
30 mins
Coding
Solve

Medium

Longest Road
logic
hashmaps
25 mins
Coding
Solve

Medium

Visitors Count
Strings
30 mins
Coding
Solve
🧐 Question🔧 Skill💪 Difficulty⌛ Time
Form Logs
Forms
Frontend
Medium3 mins
Solve
Interactive Application
JavaScript Rendering
Frontend
Medium2 mins
Solve
Background Properties
HTML/CSS
Medium2 mins
Solve
Colorful sentences
HTML/CSS
Easy2 mins
Solve
Links
HTML/CSS
Medium2 mins
Solve
Let's Hack
CSS Property
HTML/CSS
Medium3 mins
Solve
Async Await Promises
Promises
Async-Await
JavaScript
Medium2 mins
Solve
Bitcoin prices
Axios
Promises
JavaScript
Easy2 mins
Solve
My Module
Scope
JavaScript
Medium2 mins
Solve
Promise Resolve
Promises
Async-Await
JavaScript
Medium2 mins
Solve
Throw, Try, Async
Promises
Async-Await
JavaScript
Easy2 mins
Solve
Registration Queue
Logic
Coding
Easy30 minsSolve
Longest Road
logic
hashmaps
Coding
Medium25 minsSolve
Visitors Count
Strings
Coding
Medium30 minsSolve
Reason #4

1200+ customers in 75 countries

customers in 75 countries
Brandon

借助Adaface,我们能够优化我们的初始筛查过程超过75%,从而为招聘经理和我们的人才获取团队提供了宝贵的时间!


Brandon Lee, 人的负责人, Love, Bonito

Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment Front End Developer 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.

Reason #6

1 click candidate invites

Email invites: You can send candidates an email invite to the Front End Developer 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.

invite candidates
Reason #7

Detailed scorecards & comparative results

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.

test completion rate
Reason #9

Advanced Proctoring


关于前端开发人员角色

前端开发是指用户在浏览器或应用程序中首先看到的所有内容。前端开发人员负责网站的外观和感觉。前端开发主要与某些人所说的“客户端”发展有关。

前端开发人员创建了网站和在线应用程序的前端,这是用户查看和互动的。前端开发人员以HTML,CSS和JavaScript等网络语言生产网站和应用程序,使用户可以访问和与网站或应用程序进行交互。

####典型的前端开发人员责任包括:

  • 开发高效,用户友好的前端应用程序
  • 与产品经理,设计师和工程师合作生产高质量的产品
  • 与面对技术领导的客户互动以了解和实施他们的期望
  • 与各种系统和技术合作,以应对端到端的挑战

What roles can I use the Front End Developer Online Test for?

  • Front End Developer
  • Web Developer

What topics are covered in the Front End Developer Online Test?

版本控制系统

VCS
集中版本控制系统
分布式版本控制系统
git推
git拉
git命令和功能
git提取
合并冲突
git储藏
git rebase
侯爵
语义HTML

可扩展的向量图形

SVG
嵌套的网页
订购和无序清单
CSS样式
CSS选择器
Sass,少和手写笔
CSS精灵
打回来
功能声明和功能表达式
饼干
关闭

JavaScript XML

JSX
虚拟DOM
反应扩展
反应路由
数据绑定
打字稿

提前时间

AOT汇编
承诺
可观察到
形式控制
形式组
渴望的
懒负荷
字符串插值
Singapore government logo

招聘经理认为,通过小组访谈中他们提出的技术问题,他们能够分辨哪些候选人的得分更好,并且与未得分的人有区别。他们是 非常满意 随着候选人的质量入围了Adaface筛选。


85%
减少筛查时间

常见问题解答

我可以将多个技能结合在一起,为一个自定义评估吗?

是的,一点没错。自定义评估是根据您的职位描述进行的,并将包括有关您指定的所有必备技能的问题。

您是否有任何反交换或策略功能?

我们具有以下反交易功能:

  • 不可解决的问题
  • IP策略
  • Web Protoring
  • 网络摄像头Proctoring
  • 窃检测
  • 安全浏览器

阅读有关[Proctoring功能](https://www.adaface.com/proctoring)的更多信息。

如何解释考试成绩?

要记住的主要问题是评估是消除工具,而不是选择工具。优化了技能评估,以帮助您消除在技术上没有资格担任该角色的候选人,它没有进行优化以帮助您找到该角色的最佳候选人。因此,使用评估的理想方法是确定阈值分数(通常为55%,我们为您提供基准测试),并邀请所有在下一轮面试中得分高于门槛的候选人。

我可以使用该测试的经验水平?

每个ADAFACE评估都是为您的职位描述/理想候选角色定制的(我们的主题专家将从我们的10000多个问题的图书馆中选择正确的问题)。可以为任何经验级别定制此评估。

每个候选人都会得到同样的问题吗?

是的,这使您比较候选人变得容易得多。 MCQ问题的选项和问题顺序是随机的。我们有[抗欺骗/策略](https://www.adaface.com/proctoring)功能。在我们的企业计划中,我们还可以选择使用类似难度级别的问题创建多个版本的相同评估。

我是候选人。我可以尝试练习测试吗?

不,不幸的是,我们目前不支持实践测试。但是,您可以使用我们的[示例问题](https://www.adaface.com/questions)进行练习。

使用此测试的成本是多少?

您可以查看我们的[定价计划](https://www.adaface.com/pricing/)。

我可以免费试用吗?

我刚刚搬到了一个付费计划。我如何要求自定义评估?

customers across world
Join 1200+ companies in 75+ countries.
立即尝试最候选的友好技能评估工具。
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Ready to use the Adaface Front End Developer Online Test?
Ready to use the Adaface Front End Developer Online Test?
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40 min tests.
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