JavaScript Mock Interview | Online Interview Questions and Answers (Part 3)

Online JavaScript Interview recorded live with questions on JavaScript and Algorithms .

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For solutions to these interview questions please look below.

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Help me translate this video.

Solutions:

[JohnDoe-rjkf]

this should be like a tv series like episodes and seasons. So many emotions, struggle, real emotions, techsits patience. Amazing. I would watch it.

[VinothKumar]

Thanks a lot sir.i have been selected an interview and got good offer with help of your videos.once again trillions of thanks techsith.

[adelmani]

This a shot code helping to find out the length of digits without converting into String :

const nbr = 3214;
console.log('===> length of a number: ', Math.floor( Math.log10( nbr) ) + 1 );

[SanderBuruma]

For the 2nd problem can't you just do this?

function integerLength(nr){
return Math.floor(Math.log10(nr))+1
}

For me this works for any integer between 1 and 9e15

[mkSkeptics]

Amazing! this is how I would do. no need to search
function count(N){
let count = 1;
let result = N;
let i = 10;
while(result>10){
result = N/i;
i = i*10;
count++;
}
return count;
}
console.log(count(232));

[fadimoussa]

The very first line of the function should be:
if (number < 10) return 1;
😊

[sumitghewade]

I did this and it works


function lengthInteger(num){
let count = 0;
while(num!==0){
let temp = parseInt(num/10);
num = temp;
count +=1;
}
return count
}

[ajitjadhav]

We could also use parseInt() to round the number,
while(number !=0){
number = parseInt(number / 10)
counter += 1
}
return counter

[facundocorradini]

This series is awesome. Really, really useful.

[jiahaoyu]

Hi @techsith, thanks for you videos, finally I got an offer!

[aezius]

const x = [1, 2, 3, 4];

const biggest = x.reduce((a, b) => a + b) - Math.max(...x);
const smallest = x.reduce((a, b) => a + b) - Math.min(...x);

[sunilKumar-uucx]

let num = 12345;
let leng = Math.ceil(Math.log10(num + 1));
console.log(leng);
result length is 5

[naveenreddydepa]

For Second problem this is my solution
function getLength(x){

let num = x;
let counter =0;
while(num>0){
num = num/10;
if(num >=1)counter++;
else{counter++;return counter;}
}

}

[cugal]

Hah thought an easier way for the number length problem. Times the number by 0.1 and floor it. If it’s not zero then repeat. Great vids keep up the good work!

[ankush]

Length of a number :-
let num=1234;
num=Math.abs(num);
let count=0;
let i=10

count=count+1;
if(num<i){
console.log(count);
break;
}
i=i*10;
}

[gaurab]

Simple solution is using parseInt
var number = 1234;
var count = 0;
while(number !=0) {
number = number/10;
number = parseInt(number);
count++
}
alert(count);

[anuranjansrivastav]

First one to like before watching it -:)

[ManOnHorizon]

You help me to dive into the working process.
Thanks!

[SurajAgarwaladad]

Sir please make a full mock interview video which includes questions from HTML, CSS, Js, Angular for front end developer role.

[NikhilMahirrao]

let someNum = 1234;
+ 1)));

OR

You can use while(Math.floor(num) > 0) by your approach