TCS ReactJs Interview | ReactJs & Javascript | 🎉 Selected | Software Engineer | Developer 

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Thanks for the video, much needed for the interview preparation. It really builds up confidence before giving an interview. Keep up the work :)

*ReactJs Questions Asked In This Interview Are:* *1).* What is *React* ? *2).* How *React* is diff. from *Angular* & *Vue.js* ? *3).* Explain *state* & *props* ? *4).* How to pass data from *child* to *parent* in *class-based* as well as *functional-based* component? *5).* Explain *Life cycle* methods in *class-based* as well as *functional-based* component? *6).* Explain *Hooks* in react? *7).* What will happen if we pass *null or undefined* instead of empty array of *useEffect hook* as second argument ? *8).* What is *Redux* ? *9).* Why do we need to use *Redux middleware to perform asynchronous activity* ? *10).* What is *Redux Saga* vs *Redux Thunk* ?

Awesome you nailed it bro

*JS Questions Asked In This Interview Are:* 1). Name some features of *ES6* ? 2). How *let* & *const* are different than *var* ? (with Examples) 3). Do you know the concept of *Hoisting* ? 4). What is the purpose of *const* ? 5). Can an element be added or removed from a const variable *array* and *object* too? *ex: (const arr = [1,2,3,4,5])* 6). Give examples of *rest parameter* and *spread operator* ? 7). Is JS is *single-threaded* or *multi-threaded* ? And how does it achieve the *asynchronous* activity? 8). What are *closures* ? 9). What is *function currying* ?

I also answerd all the questions, thank u so much this type of video really give confidence

Hats of for the logic building in the last question buddy. . .

Thanks buddy for uploading this....this was really helpful for me who is going to sit for the interviews

My answer to the coding question : const add = (num) => { let stringedNum = num.toString(); if(stringedNum.length === 1){ return stringedNum }else{ let arrNum = stringedNum.split("") let sum = 0 arrNum.forEach(element => { sum = sum + Number(element); return sum }); return add(sum) } }

best

Thanks for sharing 🙂

Coding question was the call to select. 👍

Thanks for sharing.....

Thanks bro

Thank you for sharing....

Hi Roshan...there was one video with Meesho right? I am not able to find it again. Can you share that link? Did you clear that?

We need more of this kind of video

Here's what I'd have done in that coding qn: function addDigits(num){ var ans = 0 while(num !== 0){ let d = num%10; num = Math.floor(num/10); ans =ans+d; } return ans; } function looper(num) { while(Math.floor(num/10) !== 0) { num = addDigits(num); } return num; } var ans = looper(12345); console.log(ans);

From my TCS interview experience below are few questions 1. const arr = [1,2,3,4,5,6,7,8,9,10] var numArr = arr.map(val=>val>5) What will the value of numArr be? 2. Diff between null and undefined undefined and not defined Arrow Function vs Regular Function 3. Extract fifth element of array without using index. arr = [1,2,3,4,5,6,7,8,9,10] 4. Destructure city from below Object var empObj = { name: "Chandra", age: 36, address: { addrs1: "Koramangala", city: "bangalore", } } 5. How many times will setState run and how many times the component will re-render, what will be the final value of state(value) class Counter extends React.Component{ constructor(props){ super(props) //initial state set up this.state = {value:0} } componentDidMount(){ //updating state this.setState({value:this.state.value+1}) this.setState({value:this.state.value+1}) this.setState({value:this.state.value+1}) this.setState({value:this.state.value+1}) } render(){ return Message:{this.state.value} } } 6. Centering div with flex and having only three elements taking evenly distributed space Content1 Content2 Content3 7. What is Closure, currying, generators 8. How will you use useEffect to add event listeners. 9. Can we have one dispatched action trigger multiple reducers in redux?

Aur one request, aap ye mention kardo ki ye freshers k liye hai ya fir experienced

a possible simple solution to the coding question was: function specialSum(num) { const total = `${num}`.split('').reduce((acc, c) => +c + acc, 0); return total > 9 ? specialSum(total) : total; };

i like to convert figma design into react and because of this reason i never solve or learned js in depth but your last practical opened my eyes and i got to know that in order to get job i must practice js and learn its inbuild functions like .reduce () etc

solution for the programming question function sumOfDigits(num) { while (num > 9) { let sum = 0; while (num > 0) { sum += num % 10; // Add the last digit to the sum num = Math.floor(num / 10); // Remove the last digit from the number } num = sum; } return num; } const inputNumber = 54321; const result = sumOfDigits(inputNumber); console.log(result);

At the last question he just had to change if(inputdata)>=10 then add data(inputadddata) else return inputdata

Can you please upload techMahindra video again ? It will be really helpful or can you please question asked by the organisation

Please don't judge and comments on my answers. this is just the interview experience and If you know the right answers please comment below which can also help others.

function addition(...rest) { const arrList = rest .map((elm) => elm) .join() .split("") .map((el) => Number(el)); const sum = arrList.reduce((a, b) => (b += a)); if (sum < 10) return "Enter the value whose sum is in two digit number."; else return String(sum) .split("") .map((el) => Number(el)) .reduce((a, b) => a + b); } const res = addition(51); console.log(res);

upload more videos like that

Can anyone tell me how to negotiate for salary

Bhai kal mera interview h aaj me aapka video dekh rha h hun😀 by the way me v HAZARIBAGH se hun😊

Hey, how does yours jsfiddle autocompleting the words? It's not working on my side. Can you help me, please?

Was this just one technical round that happened?

Can you upload on backend coding interviews as well??

I think the code which you wrote will fail for this corner case : num = any number that sums up to 99 (99999999999) it's sum is 99, it will check the if condition and returns 18 It should return 9 Correct me, I am wrong.

Hi sir, All your interview experience brings me confidence to attend interviews How do u get the interview opportunity pls let me know

What is the packages company offering?

Is English important ❓😶. let English; if(English==imp){ console.log("why") } else{ console.log("No") }

Is it ist round or second round if it was first round then what was in second round have they asked questions related to DSA or not ?

Please also share your question and answer in your description or comment.

In 2023 there is no job market for freshers

Do the company strictly ask for a degree or self though is good to go?

bro it was ReactJS Developer interview or reactjs + Javascript developer,what was mentioned in JD or in mail?

Hey , how many days it takes to get the result of first round ?

Your videos always have low audio. Please fix that, it will be helpful

1.What are pure functions 2.What are React pure component 3.What are higher order components Explain with example 4. Typescript and example 5. Redux

what about DSA ? will thr be seperate round for DSA?

How much experience did you have when you gave this interview ?

I am also from Hazaribagh

Pls tell me how you find job and do apply??? Which website

Y do u blur the screen is it due to some copyright issue or what??

for how many years of experience.. ?

What is the name of that platform being used for react js. Can u tell me plz

Have you got selected?

Hi @Dev. Aditya, Your videos are really helpful. Actually my situation is bit complicated, i hope you can help me. I am working as a SAP BO developer having 2.5 yrs of exp and i want to change my tech to react js. I already learnt js and react js plus i have made projects also. I am pretty confident now. But I want to make my exp count, so i am going to lie on my resume that i worked on react only. Please guide me how to overcome when interviewer asked me about my work expierience?

which tool used to record this interviews in windows ?

Have you got placed anywhere or still searching?

In shorter we could write like this function adddata(num) { let value = num.toString().split("").map((e) => parseInt(e)).reduce((a, b) => a + b); if (value >= 10) { return adddata(value) } else { return value } } let val = adddata(5467); console.log(val)

which role is it? is it ASE ( 3.36 lpa )?

Hi Roshan. Are you from CS background? Which course did you use to learn all this

How can we apply for this kind of jobs?

which company interview is this one?

Hi bro thanks a lot sharing your experience. Could you know us what was your salary package about this interview? And was it your interview as a fresher or experience candidate? If you are comfortable to share please share.

Bro Im scared of frontend interviews, Ive made multiple project with react nd most of the times I have to google to see the syntax , i know the idea but im very bad at syntaxes... Idk if im able to clear interview without google 😵

Is this interview taken for 3+ yrs exp?

Sloths taking interview

Is it for fresher or experienced?

This was it ? Or any more round ?

Is it your strategy to speak as less as possible about any question?

Can you share your resume

Bro are you experienced or fresher?

You are removed latest one interview video .what happened??

how much salary u got from this interview

(function() { a = 4987 function dfs(a) { a = a.toString() if(a.length acc + Number(cur), 0) console.log(dfs(res)) } dfs(a) })()

p͓̽r͓̽o͓̽m͓̽o͓̽s͓̽m͓̽ 😱

Sir can I get your email?