Underscore.js Utility Complete Reference Last Updated : 23 Jul, 2025 Comments Improve Suggest changes Like Article Like Report Underscore.js is a lightweight JavaScript library and not a complete framework that was written by Jeremy Ashkenas that provides utility functions for a variety of use cases in our day-to-day common programming tasks. The complete reference for underscore utility is provided below: Function Description _.noConflict()It creates a reference of the global underscore object “_” to another variable. _.identity()It returns the exact same replica of the value given to it as the argument. _.constant()It create a function that returns the parameter given to it. _.noop()It is used to return “undefined” irrespective of the arguments passed to it. _.times()It is used to call the function a particular number of times. _.random()It returns a random integer which is in the range provided to the function. _.mixin()It is used to add extra functionality. _.iteratee()It generates a callback that can be applied to every element in a collection. _.uniqueId()It generates a globally unique id for the client-side models. _.escape()It is used to escape a special character string from inserting into HTML. _.unescape()It is used to unescape a special character. _.result()It gives value of a property of an object. _.now()It returns the timestamp of the current time. _.template()It compile JavaScript templates into functions that can be evaluated for rendering. Comment More info G ghoshsuman0129 Follow Improve Article Tags : JavaScript Web Technologies JavaScript - Underscore.js Underscore.js-Utility 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 Strings6 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