In this tutorial, we will use iteration methods to loop through arrays, perform functions on each item in an array, filter the desired results of an array, reduce array items down to a single value, and search through arrays to find values or indices. Note:Array methods are properly ...
Array.from() Method Another way to clone an array in JavaScript is by using the Array.from() method. It creates a new, shallow-copied Array object from an array-like or iterable object. Here is an example: const fruits = ['🍑', '🍓', '🍉', '🍇', '🍒']; // clone `...
How to generate a string out of an array in JavaScriptUsing the toString() method on an array will return a string representation of the array:const list = [1, 2, 3, 4] list.toString()Example:The join() method of an array returns a concatenation of the array elements:...
describe('all',function(){//check return typeit('should be an array of strings',function(){ expect(starWars.all).to.satisfy(isArrayOfString);functionisArrayOfString(array){returnarray.every(function(item){returntypeofitem === 'string'; }); } });//ccheck one of the valueit('should i...
We can write this function as an inline function. Check the code snippet below to understand better. var a = ['hello', 1, false]; a.forEach((i) => { console.log(typeof i); }) OOutput: string number boolean Here, we apply the typeof operation on each element of the Array....
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/push refs https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/Reduce https://stackoverflow.com/questions/9229645/remove-duplicate-values-from-js-array ...
Traditional Approach: Array.unshift() The ‘Array.unshift()’ is a built-in method in JavaScript frameworks likeSencha Ext JSwhich is used to insert one or more elements at the beginning of an array. The method not only modifies the original array permanently but also returns the new length...
generateArrayOfYears() function will create an array of 10 most recent years no matter what year it is. It uses a JavaScript Date() object to get the current year. There’re a lot of things you can now do with this array. You can create an utility in Vue.js, Angular or React to...
Write Your First jQuery Plugin To write a plugin, add a new property in the jQuery.fn object where the name of the property will be the name of your plugin. (function( $ ) { $.fn.myPlugin = function() { // Do your awesome plugin stuff here }; })( jQuery ); Let's start...
Modern JavaScript has many new features that make it easy to write code in a simple and structured manner. One of the handy modern features available in ES6+ is array and object destructuring. JavaScript frameworks like React.js and Angular encourage the use of this technique. So it’s essent...