Underscore.js is a popular utility library for Javascript that provides a wide range of helper functions to make it easier to work with arrays, objects, and functions in Javascript. One of the most commonly used functions in the library is _.extend(), which is used to merge two or more objects together.
The syntax for _.extend() is simple: _.extend(destination, *sources). The first argument is the object that you want to modify, and the subsequent arguments are the objects that you want to merge with the destination object.
Here are some code examples of how _.extend() can be used:
// Example 1: Merging two objects var obj1 = { name: "John", age: 25 }; var obj2 = { gender: "male" };
// Example 3: Using _.extend() to create a new object var obj1 = { name: "John", age: 25 }; var obj2 = { gender: "male" }; var obj3 = { occupation: "programmer" };
The _.extend() function is a part of the Underscore.js library.
JavaScript _.extend - 30 examples found. These are the top rated real world JavaScript examples of Underscore._.extend extracted from open source projects. You can rate examples to help us improve the quality of examples.