Given an Array, the task is to add an element to the end of an array in JavaScript. There are multiple ways to add an element to the end of an array in JavaScript. These are – 1. Using push() Method The push() method is a very basic method to add an element to the…
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Given an array with elements, the task is to remove the last element of an array in JavaScript. 1. Using pop() Method The pop() method is a basic and most used approach to remove the last element from an array. This method modifies the original array and returns the removed element. Example Features 2. Using…
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There are various methods to add an element to the beginning of an array in JavaScript. Each method has its unique benefits, drawbacks, and use cases. This article will discuss all possible methods to prepend an element to an array, including their syntax, examples, and applicable use cases. 1. Using the unshift() Method The unshift()…
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Given an array, the task is to remove an item from an array by value in JavaScript. While arrays in JavaScript provide methods to remove items by index, removing by value requires slightly more effort. This article will cover all the ways to remove an item from an array by value, explaining its syntax, pros,…
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Given two arrays, the task is to find the difference between two arrays in JavaScript. The difference between two arrays means the elements that are present in one array but not in the other. There are several methods to calculate these differences. 1. Using filter() Method The filter() method is one of the most efficient…
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Given an Array, the task is to check whether an array contains a specific string in JavaScript and jQuery. 1. Using Array includes() Method The includes() method is one of the simplest ways to check if an array contains a specific string. It is designed to test for the presence of an element in an…
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There are various methods to verify whether an array is empty or undefined in JavaScript. 1. Using if Statement The simplest method to check if an array is empty or undefined is by using a basic if statement. You can test the array’s existence and its length. 2. Using Optional Chaining (?.) Optional chaining (?.)…
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There are various methods to remove objects from an array in JavaScript. 1. Using Array filter() Method The filter() method is a functional way to remove an object from an array. It creates a new array containing only the elements that meet a specified condition. 2. Using Array splice() Method The splice() method modifies the…
Given an array, the task is to check whether an item exists in a JavaScript array. There are several methods to determine if an item is present. 1. Using Array includes() Method The includes() method is the simplest way to check if a value exists in an array. It works for arrays of primitive values…
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The Array.join() method is a built-in JavaScript function used to join all elements of an array into a single string. The elements are separated by a specified delimiter or a comma (,) if no delimiter is provided. Syntax Parameters Parameter Description separator (Optional) A string is used to separate array elements in the resulting string….