JavaScript Interview Questions for Freshers 1. What are the different data types present in javascript? 2. Explain Hoisting in javascript. 3. Why do we use the word “debugger” in javascript? 4. Difference between “ == “ and “ === “ operators. 5. Difference between var and let ...
Common JavaScript coding interview questions Some of the common JavaScript coding interview questions typically cover these topics: checking for palindrome, finding missing/largest numbers, object manipulation, removing duplicates, merging, etc.1. Write a function to check if a given string is a palin...
This is one of the basic JavaScript interview questions for freshers. Writing a hello world program in JS has three different ways, as discussed here: a) console.log() // write hello world program in JS console.log('Hello World'); b) alert() // write hello world program in JS alert(...
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Too Long; Didn't ReadThis post provides a detailed list of JavaScript interview questions, from basic to advanced levels, to help you practice and prepare for technical interviews.1x Read by Dr. One Listen to this storyBasic What are the different data types in JavaScript? Primitive Types:...
Intermediate Level JavaScript Interview Question1. What are the valid scopes of a variable in JavaScript?Ans: The scope of a variable is the region of your program in which it is defined. JavaScript variable will have only two scopes.Global...
If you don't want to wait, you can buyYuri's JavaScript Flashcards, a set of frontend interview questions sorted by popularity among interviewers printed on beautiful poker-size flashcards. Question 1. What's the difference betweenundefinedandnot definedin JavaScript ...
js interview summary Summary ofquestions: 160ed40803e030 https://segmentfault.com/a/1190000040189169 Question 1, before ++, after ++, difference? var i=2 ; a = i++ //将i的值赋给a , 即a = i,之后再执行i = i + 1; 2 a = ++i //将i+1 的值赋给a,即a = i + 1 ,之后再执行...
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The understanding above tells us that JavaScript is Single threaded. This means that the code execution is linear. Code that is running cannot be interrupted by something else going on in the program. Explain the differences on the usage of foo between function foo() {} and var foo = ...