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JavaScript Arrays 101

JavaScript Arrays 101

via Dev.to WebdevSouvik Guha Roy

When working with JavaScript, you will often need to store multiple values together . For example, you might want to store: A list of fruits Student marks A list of tasks Instead of creating many separate variables, JavaScript provides a better solution called arrays . Arrays help us store and manage collections of data efficiently. In this article, we will learn the basics of arrays in JavaScript and how to work with them. Topics Covered In this blog we will learn: What arrays are and why we need them How to create an array Accessing elements using an index Updating elements in an array The length property Looping through arrays What Are Arrays? An array is a data structure that stores multiple values in a single variable . The values inside an array are stored in a specific order , and each value can be accessed using its index . Example: let fruits = [ " Apple " , " Banana " , " Orange " ]; Here: fruits is the array "Apple" , "Banana" , "Orange" are the elements inside the array Why

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