There are several ways to remove duplicate elements from JavaScript array. It is useful while working with data that have many repetitive values. 1. Using a Set The simplest and most efficient ways to remove duplicates from an array in JavaScript is by using the Set object. A Set is a built-in data structure in…
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In JavaScript, there are several ways to create an array containing numbers from 1 to N. 1. Using a for Loop The basic method is to create an array of numbers is by using a for loop. Explanation 2. Using Array.from() Method The Array.from() method creates a new array from an array-like or iterable object….
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JavaScript 2D Array (Two-Dimensional Array in JavaScript) is a data structure that is used to store elements in a grid-like fashion using rows and columns. It can be visualized as an array of arrays, where each inner array represents a row. 2D arrays are useful in scenarios like representing matrices, tables, or grids in a…
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An Identity Card (ID Card) is a crucial document used in schools, offices, and organizations to verify a person’s identity. Typically, it includes personal details such as name, photo, date of birth, contact information, and sometimes more like social handles. In this article, you’ll learn how to design a responsive and professional-looking identity card using just HTML and CSS —…
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Given an array and index, the task is to insert a particular item at a given index. There are multiple ways to insert an item into an array at a specific index in JavaScript. 1. Using splice() Method The splice() method is used to modify the original array. This method can be used to insert,…
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The indexOf() method returns the first index at which the element can be found in the array, or -1 if the element is not present. This method is case sensitive for string element. Syntax Parameters Parameters Descriptions searchElement The element whose index is to be find. fromIndex (Optional) Its default value is 0, which means…
JavaScript Array Methods provide powerful built-in functions to perform operations on array. These methods simplifies the operations like – adding, removing, searching, sorting, filtering, and other operations. Here is an example that demonstrates the basic array operations. Below are the list of all JavaScript array methods with their brief description. Method/Property Description JavaScript Array() constructor…
Array in JavaScript is a collection of elements, where the array elements can be of any type like – numbers, strings, objects, or even other arrays. The index of JavaScript Arrays starts from zero, which means the first element is accessed with an index of 0. Create an Array There are different ways to create…