‘use strict’ is literal expression which was introduced in ECMAScript 2015. Basically, when you use ‘use strict’ it tells the Browser to execute code into
Category: Javascript Interview questions
Javascript Hoisting : Variable Hoisting
Hoisting is Javascript’s default behavior of moving declarations to top of the file. There are two types of Hoisting is there: Variable Hoisting Function Hoisting
How to check if JavaScript Object is empty or not/How to check if Javascript Array object is empty or not
While working with Javascript sometimes you have to check if a Javascript object/array is empty or it contains some keys/objects. To check if Javascrippt Array
Difference between var and let in Javascript
Main difference between var and let is Scoping. var keyword: var declare variable and optionally initialize the variable to a value. Syntax: var declarations, wherever it
Check if element is visible or hidden in jQuery?
The below code will help to identify if the element is visible or not: However, :visible will also check if the parent elements are visible. The
How to add an Array of classes to an element using jQuery? Ex. Add different color to different using [array]
With jQuery 3.3.0, the .addClass(), .removeClass(), and .toggleClass() methods accept an array of classes. We will see how to add different color to n number of div elements on
Immediately-Invoked Function Expression ( IIFE )
It executes immediately after it’s created. It has nothing to do with any event-handler for any events (such as document.onload). The first pair of parentheses (function(){…}) turns the
Difference between == and === in Javascript
While conducting interview for a Front end developer perspective, It is essential to know the difference between == and === comparisons operators in Javascript. Javascript