Lodash _.isMap() Method Last Updated : 04 Sep, 2024 Comments Improve Suggest changes Like Article Like Report Lodash _.isMap() method checks whether the given value is a map object or not and returns the corresponding boolean value.Syntax:_.isMap( value );Parameters: value: This parameter holds the value that needs to be checked for a map object.Return Value: This method returns a Boolean value(Returns true if the given value is a map object, else false).Example 1: In this example, it is returning true as the given value is a map object. JavaScript // Defining Lodash variable const _ = require('lodash'); let testMap = new Map; // Checking for Map console.log("The Value is Map : " + _.isMap(testMap)); Output:The Value is Map : trueExample 2: In this example, it is returning false as the given value is not a map object. JavaScript // Defining Lodash variable const _ = require('lodash'); let testMap = new WeakMap; // Checking for Map console.log("The Value is Map : " + _.isMap(testMap)); Output:The Value is Map : false_.isMap() checks if a value is a Map object.How do you use _.isMap()?Use _.isMap(value), where value is the item to check if it is a Map.Can _.isMap() identify weak maps?No, _.isMap() specifically checks for Map objects, not WeakMaps.Does _.isMap() work with empty maps?Yes, _.isMap() returns true for empty Map objects.Can _.isMap() differentiate between Map and Object?Yes, _.isMap() only returns true for Map objects, not for plain objects. Comment More info T taran910 Follow Improve Article Tags : JavaScript Web Technologies JavaScript-Lodash 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)9 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 readJavascript Scope3 min readJavaScript Higher Order Functions7 min readDebugging in JavaScript4 min read Like