| What are all the data types JavaScript supports? |
| What are all the types of function? Or what are all the different ways you can declare a function and how they differ? |
| What is instanceof in JavaScript? |
| What is Event capturing and Event bubbling? |
| What is the difference between window.onload and onDocumentReady? |
| What is exception handling? |
| What is shift() and push? How they are differing from each other? |
| What is callback? How they work? |
| What is Browser Object Model or BOM? |
| What is negative infinity? |
| What is Number and String Objects in JavaScript? |
| What is encodeURI and decodeURI in JavaScript? |
| What is currying in JavaScript? |
| What is NaN in Javascript? |
| What is DOM |
| What is ES? |
| What is Javascript? |
| What is the difference between window and document? |
| What are the difference between == and ===? |
| What is the use of typeof? |
| What is prototype in javascript? |
| What is undefined? |
| What is not defined? |
| What is closure? |
| What is instanceOf? |
| What is method? |
| What is object? |
| What is function? |
| What is the difference for let and const? |
| What is variable hoisting? |
| What is IFFE? |
| What is Default Parameters? |
| what is promise? |
| What is function binding? |
| What is constructor? |
| What are the data types are available in JavaScript (JS)? |
| What are the ways to create an object in JavaScript? |
| What is function in JS and how to define it? |
| What is Array helper function and explain one of them? |
| What is every and find in array helper function? |
| What are the scopes of a variable in JavaScript? |
| What is every and some in array helper function? |
| What is reduce array helper function and how to use it? |
| What is Arrow functions and how to define it? |
| What is Template strings in JS |
| What is the use of ?This? operator in JavaScript? |
| What are the ways to define a variable in JavaScript? |
| What is the difference between the operators ?==? & ?===?? |
| What is the difference between null & undefined? |
| What is the difference between undefined and undeclared? |
| What is the difference between document and window in JavaScript? |
| What is a prompt box in JavaScript? |
| What is the use of isNaN function? |
| What would be the result of 1+2+?9″? |
| What is the use of Void (0)? |
| What is the data type of variables of in JavaScript? |
| What is the difference between a confirmation box and an alert box and? |
| What will be the output for the below |
| What is callback in JS? |
| What is closure in JS? |
| What is Difference between the substr() and substring() functions in JavaScript? |
| What is spread operator in JavaScript? |
| What is Promise in JavaScript? |
| What is ?use strict?? |
| What are different types of errors available in JS? |
| What close() does in JavaScript |
| What is the difference between instanceof and typeof in Javascript? |
| What is BOM ? |
| What is Classes and how to define? |
| What can be output for this JS code? |
| What is ?With ? keyword in JavaScript? |
| Which is latest release in ECMAScript? |
| Which are types of Pop up boxes available in JavaScript? |
| Which keyword is used to print the text on the screen? |
| Which operator supports in JavaScript? |
| Which built-in method returns the length of the string? |
| How can you remove an element from an array? Or can you use delete to remove an element in an array or not? |
| How can you get the list of all properties in an Object? |
| How do you empty an Array? |
| How to find the length of associative Array? |
| How to create an Object? |
| How can you create an Array in JavaScript? |
| How to give default argument in function? |
| How to merged two arrays? |
| How to give comments in Javascript? |
| How to read elements of an array in JavaScript? |
| How to create blink text using JS ? |
| How is it possible to get the total number of arguments that are passed to a function? |
| When is the use JSON.stringify()? |
| Who is the founder of Javascript? |
| Check whether Object is an Array/Not? |
| Is javascript case Sentiative? |
| Is exception handling possible ? How to handle exception in JavaScript ? |
| Singleton Pattern in js? |
| Syntax for Spread Attributes? |
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