Front End Developer Interview Questions

12,571 front end developer interview questions shared by candidates

1) In first-round everything went well from basic js to writing some code on the question asked from the panel on a video call - Result of the call was 50 - 50 2) As the result was 50 - 50 I received an assignment on Friday and the deadline was on Monday. I have successfully completed the assignment on Sunday itself and sent it. 3) Hr arranged further rounds with CTO as I think they are OK with my assignment. So that round also went well with basic js, roles, current projects, etc. Than received message from HR "we liked your profile but we taking assignment round of other candidates also we will get back to you soon(in the week)" Till the day I'm writing this I have never heard back from HR. So I genuinely want to tell the company if you don't want to select the candidate to update him immediately it will not take much time and effort. It will only help the candidate to improve only. My experience was bad I don't recommend this company.
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Front End Developer

Interviewed at MangoApps

1.8
Nov 19, 2019

1) In first-round everything went well from basic js to writing some code on the question asked from the panel on a video call - Result of the call was 50 - 50 2) As the result was 50 - 50 I received an assignment on Friday and the deadline was on Monday. I have successfully completed the assignment on Sunday itself and sent it. 3) Hr arranged further rounds with CTO as I think they are OK with my assignment. So that round also went well with basic js, roles, current projects, etc. Than received message from HR "we liked your profile but we taking assignment round of other candidates also we will get back to you soon(in the week)" Till the day I'm writing this I have never heard back from HR. So I genuinely want to tell the company if you don't want to select the candidate to update him immediately it will not take much time and effort. It will only help the candidate to improve only. My experience was bad I don't recommend this company.

// What does this code return? var Foo = function (a) { this.bar = () => { return a; } var baz = function () { return a; }; }; Foo.prototype = { biz: () => { return this.bar(); } }; var f = new Foo(7); f.bar(); //=> f.baz(); //=> f.biz(); //=>
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Front End Developer

Interviewed at LinkedIn

3.8
Jan 8, 2019

// What does this code return? var Foo = function (a) { this.bar = () => { return a; } var baz = function () { return a; }; }; Foo.prototype = { biz: () => { return this.bar(); } }; var f = new Foo(7); f.bar(); //=> f.baz(); //=> f.biz(); //=>

Asked me to write a throttle function in javascript. Well, essentially...he wanted me to write a function that would call another function, but not if it had been called within a certain set time, which is essentially what a throttle function is. I completely flailed, but it's a useful function to have...probably why they put it in the underscore library which is what I based this answer on.
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Front End Web Developer

Interviewed at Google

4.4
Aug 15, 2014

Asked me to write a throttle function in javascript. Well, essentially...he wanted me to write a function that would call another function, but not if it had been called within a certain set time, which is essentially what a throttle function is. I completely flailed, but it's a useful function to have...probably why they put it in the underscore library which is what I based this answer on.

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