Check if an array is empty or not in JavaScript Last Updated : 11 Jul, 2025 Comments Improve Suggest changes 3 Likes Like Report These are the following ways to check whether the given array is empty or not:1. The length Property - mostly usedThe length property can be used to get the length of the given array if it returns 0 then the length of the array is 0 means the given array is empty else the array have the elements. JavaScript let a = []; if (a.length == 0) { console.log("Empty"); } else { console.log("Not Empty"); } 2. Using Array.isArray() with Length PropertyThe Array.isArray() method checks whether the given variable consist of array or not. if it returns true then is checks for the length and prints the results accordingly. JavaScript let a = []; if (Array.isArray(a) && a.length === 0) { console.log("Empty"); } else { console.log("Not Empty"); } Create Quiz Comment S sayantanm19 Follow 3 Improve S sayantanm19 Follow 3 Improve Article Tags : JavaScript Web Technologies javascript-string JavaScript-DSA JavaScript-Questions +1 More Explore JavaScript BasicsIntroduction to JavaScript4 min readVariables and Datatypes in JavaScript6 min readJavaScript Operators5 min readControl Statements in JavaScript4 min readArray & StringJavaScript Arrays7 min readJavaScript Array Methods7 min readJavaScript Strings5 min readJavaScript String Methods9 min readFunction & ObjectFunctions in JavaScript5 min readJavaScript Function Expression3 min readFunction Overloading in JavaScript4 min readObjects in JavaScript4 min readJavaScript Object Constructors4 min readOOPObject Oriented Programming in JavaScript3 min readClasses and Objects in JavaScript4 min readWhat Are Access Modifiers In JavaScript ?5 min readJavaScript Constructor Method7 min readAsynchronous JavaScriptAsynchronous JavaScript2 min readJavaScript Callbacks4 min readJavaScript Promise4 min readEvent Loop in JavaScript4 min readAsync and Await in JavaScript2 min readException HandlingJavascript Error and Exceptional Handling6 min readJavaScript Errors Throw and Try to Catch2 min readHow to create custom errors in JavaScript ?2 min readJavaScript TypeError - Invalid Array.prototype.sort argument1 min readDOMHTML DOM (Document Object Model)8 min readHow to select DOM Elements in JavaScript ?3 min readJavaScript Custom Events4 min readJavaScript addEventListener() with Examples9 min readAdvanced TopicsClosure in JavaScript4 min readJavaScript Hoisting6 min readScope of Variables in JavaScript3 min readJavaScript Higher Order Functions7 min readDebugging in JavaScript4 min read Like