Questions d'entretiens - Frontend engineer

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Apisero
On a demandé à un Frontend Developer...26 août 2020

Easy quant and java questions

7 réponses

How long do they take to announce results of quiz round?

As soon as you submit the quiz u will get the mail... May be if you get shortlisted otherwise i don't know Moins

Ty for your response. Do they confirm if I'm selected or not selected by mail?

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Wix

1. about 2. javascript typescript babel es5 es6 3. test driven development, unit-testing, continuous integration 4. react-redux, modern JS frameworks, JS closures 5. function sum(){/*add code here*/};console.log (sum(3)(5)(7)(3)()); // 18

4 réponses

function sum(x) { return function(y) { return function(z){ return function(w){ return function(){ return x + y + z + w; } } } } } Moins

function mySum(val){ if(val === undefined) return val; return function(val2){ if(val2 === undefined) return val; return mySum(val + val2); } } Moins

var sum = (n) => { let result = n; const fn = (n) => { if (n == null) { return result; } result += n; return fn; } return fn; } Moins

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Canva

45 min Frontend question with HTML CSS and JavaScript. Have to make something.

3 réponses

Not going to give the question. Had to use mostly vanilla javascript including; setInterval, Math.floor, Array.slice, % operator and understand global vs function vs block scope. Bonus points for understanding request animation frame, this, and the event loop. If you get stuck explain to the engineer your solutions and why they dont work and ask for a hint. I had 2 hints and got the offer. The interviewer obviously knows the solution so dont try and outsmart them. Goodluck Moins

Thanks for the information. This will definitely help one preparing for the interview :-) Moins

Can you please provide more information on this ?

Meta

Round 1: Given a string and a style array render HTML pretty much like a rich text editor. For example: 'Hello, world', [[0, 2, 'i'], [4, 9, 'b'], [7, 10, 'u']] Output: '<i>Hel</i>l<b>o, w<u>orl</u></b><u>d</u> something like that.

3 réponses

I used a hash map and a stack to store the indices. I pushed the style into a stack and popped off when I hit the index. I had to write the output so I took care of not having invalid HTML having the <b> and <u> mixed up. This particular use case I had to take care. The interviewer gave me some hints around the hash map but I came up with the algorithm and implemented almost through the complete hour.</u></b> Moins

You can answer it as an algorithm question. Or you can answer it like a true FEE by leveraging the platform. 1. Flatten the tags into a single array of open and close tag pairs. 2. Sort the flattened tags by injection index. 3. Insert tags in reverse order to preserve shifting index. 4. Join the string and pass it to innerHTML and let the browser handle the rest Moins

Hey! I am trying to solve this problem. Can you give me some direction?

Razorpay

Design a modal from scratch using React

3 réponses

No DSA round for frontend

Can you please tell the CTC, It would be a great help.

Yes, please and your YOE

LOVOO

Experiences in angular and bootstrap

3 réponses

Positive

Only that's been asked ;) you even did not read the resume.

Thanks for highly interesting in my skills

Quovantis Technologies

Q What if I use var inside Contstructor function? function Person(firstName, lastName, age){this.firstName=firstName;this.lastName = lastName; var a = 5;}; What will console.log(a); print?

2 réponses

It will give compile time error, as you are using a variable outside of its scope. Moins

I was not able to answer this

Canva

Find the length of longest contiguous sub-array where the sum of the elements in subarray is less than or equal to "k".

2 réponses

Didn't save my solutions, but it solved only 7 out of 10 of hackerrank's tests and for them, it wasn't enough. It had to do with time complexity/ Moins

The key in these questions is to cover the fundamentals, and be ready for the back-and-forth with the interviewer. Might be worth doing a mock interview with one of the Canva or ex-Canva Frontend Engineer experts on Prepfully? They give real-world practice and guidance, which is pretty helpful. prepfully.com/practice-interviews Moins

Atlassian

Build a custom UI and debug.

2 réponses

There's quite an extended back and forth in actual interviews for questions like this, so nothing quite like real practice. The Prepfully Atlassian Frontend Software Engineer experts have actually worked in this role, so they're able to do an honest-to-God accurate mock, which really puts you through the paces. prepfully.com/practice-interviews Moins

Do projects with a framework for your choice. Understand how to use the debugger and browser tools. Moins

Twitch

Why do you want to work at Twitch?

2 réponses

My history involving coding, streaming, and gaming.

In these sorts of interviews you really need to drill down and understand what the interviewer is looking for. A good way to simulate a real interview experience is to do a mock with one of the Twitch Frontend Engineer experts on Prepfully, rated super strongly on TrustPilot... prepfully.com/practice-interviews Moins

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