Feb 9, 2025 · 3 min read · indexOf() Understanding String Methods with Arguments in JavaScript In JavaScript, string methods are used to perform various operations on strings. Some of these methods require arguments, which are values passed to the method to influence its behav...
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Jan 30, 2025 · 3 min read · Understanding String Methods in JavaScript Strings are one of the most fundamental data types in JavaScript, and they come with a variety of built-in methods that allow developers to manipulate and work with text efficiently. In this blog, we will ex...
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Dec 6, 2023 · 1 min read · indexOf Returns first index of the found element otherwise -1. Array.prototype._indexOf = function(searchElement, fromIndex = 0) { for(let i = fromIndex; i < this.length; i++) { if(searchElement === this[i]) { return i ...
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May 17, 2023 · 6 min read · Searching for a specific element in an array is a common task in programming. Two popular methods for searching arrays in JavaScript are iterating over each element using a for loop and Array.prototype.indexOf(). The former is a simple search algorit...
Join discussionMay 16, 2023 · 3 min read · const numArray = [0,1,1,2,2,2,3,3,5,5,5] // input //expected output [0,1,2,3,5] Using the indexOf & filter method indexOf: MDN says, the indexOf() method returns the first index at which a given element can be found in the array, or -1 if it is no...
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Aug 27, 2022 · 3 min read · In JavaScript, an array is an ordered list of values. Each value is called an element specified by an index. An array is an object that can store multiple values at once. For example, const words = ["India", "Sweden", "Norway", "Iceland"]; Here, word...
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Aug 9, 2022 · 2 min read · Find the index of the array element you want to remove using indexOf, and then remove that index with splice. The splice() method changes the contents of an array by removing existing elements and/or adding new elements. const array = [2, 5, 9]; c...
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