Posts from JavaScript

Replace an object in an array with another object in JavaScript

By Samim

In this tutorial, I will show how you can replace an object in an array with another object in JavaScript. Here are some methods below to replace an object in an array with another.... Read More

Merge or flatten an array of arrays in JavaScript

By Samim

In this tutorial, I will saw you how to merge or flatten an array of arrays. An array of arrays basically means an array that contains multiple arrays. These are some methods below.... Read More

Separate characters, special characters and numbers from a string in JavaScript

By Samim

In this tutorial, We will see how to separate characters, special characters and numbers from a string in JavaScript. We can use regular expressions for this purpose. Using match().... Read More

Declare optional function parameters in JavaScript

By Samim

In this tutorial, we will learn how to declare optional function parameters in JavaScript during defining the function. The optional function parameters can be defined by assigning.... Read More

Get selected value in dropdown list using JavaScript

By HETVI JAIN

In this article, we will focus on how to get the selected value in the dropdown list in JavaScript.There are two ways to achieve that. Using Value Property Using selectedIndex prop.... Read More

Format numbers as currency strings in JavaScript

By Samim

In this tutorial, I will show you how to format numbers as currency strings in JavaScript. The currency strings represent numbers in a specific currency format. The currency symbol.... Read More

Extend an existing JavaScript array with another array, without creating a new array

By Samim

This tutorial will show you how to extend an existing array with another array, without creating a new array in JavaScript. We can extend an existing array with another array in mu.... Read More

Node.js callbacks in exported modules

By HETVI JAIN

In this tutorial, we will see how to use callbacks in exported modules. This is a very important concept and one of its applications is error handling. We will be using an import a.... Read More