javaScript Replace() | javaScript String Replace All

javaScript Replace() | javaScript String Replace All

Javascript string replace() method. In this tutorial, we will explain the javascript string.replace() method with the definition of this method, syntax, parameters, and several examples.

Javascript string replace() method. In this tutorial, we will explain the javascript string.replace() method with the definition of this method, syntax, parameters, and several examples.

JavaScript String Replace()

Definition: – The JavaScript string replace() method searches a string for a specified value or a regular expression, or keyword, and replace match search string to given string, returns a new string

Syntax

string.replace(search_val, new_val);

Parameters of string replace method

| Parameter | Description | | search_val | This is the first parameter and required. The value, or regular expression, that will be replaced by the given value | | new_val | This is the second parameter and required. The given value to replace the search value. |

Ex:

   var str = "My fav bike color is white";
   var res = str.replace(/white/g, "black");
   document.write( "Output :- " + res ); 
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>javaScript Replace() |javaScript String Replace All</title>
</head>
<body>

</body>
<script type = "text/javascript">
   var str = "My fav bike color is white";
   var res = str.replace(/white/g, "black");
   document.write( "Output :- " + res ); 
</script>  

</html>

Result of the above code is:

Output :- My fav bike color is black

Ex

Here we will take the second example of string replace() method with case-insensitive string:

   var str = "My fav bike color is White";
   var res = str.replace(/white/gi, "black");
   document.write( "Output :- " + res ); 
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>javaScript Replace() |javaScript String Replace All</title>
</head>
<body>

</body>
<script type = "text/javascript">
   var str = "My fav bike color is White";
   var res = str.replace(/white/gi, "black");
   document.write( "Output :- " + res ); 
</script>  

</html>

Result of the above code is:

Output :- My fav bike color is black

Ex3

Here we will take a new example of javascript string replace all with regexp.

var str = 'this is the sentence to end all sentences';

var res = str.replace(new RegExp('sentence', 'g'), 'message');

document.write( "Output :- " + res ); 
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>javaScript Replace() |javaScript String Replace All</title>
</head>
<body>
  <script type = "text/javascript">

   var str = 'this is the sentence to end all sentences';

   var res = str.replace(new RegExp('sentence', 'g'), 'message');

   document.write( "Output :- " + res ); 

  </script>  
</body>
</html>

Result of the above code is:

Output :- this is the message to end all messages

javascript programming

Bootstrap 5 Complete Course with Examples

Bootstrap 5 Tutorial - Bootstrap 5 Crash Course for Beginners

Nest.JS Tutorial for Beginners

Hello Vue 3: A First Look at Vue 3 and the Composition API

Building a simple Applications with Vue 3

Deno Crash Course: Explore Deno and Create a full REST API with Deno

How to Build a Real-time Chat App with Deno and WebSockets

Convert HTML to Markdown Online

HTML entity encoder decoder Online

Learning JavaScript: Development Environments for JavaScript Programming

One of the nice things about learning JavaScript these days is that there is a plethora of choices for writing and running JavaScript code. In this article, I’m going to describe a few of these environments and show you the environment I’ll be using in this series of articles.

Learning JavaScript: Data Types and Variables

To paraphrase the title of an old computer science textbook, “Algorithms + Data = Programs.” The first step in learning a programming language such as JavaScript is to learn what types of data the language can work with. The second step is to learn how to store that data in variables. In this article I’ll discuss the different types of data you can work with in a JavaScript program and how to create and use variables to store and manipulate that data.

[ Professor JavaScript ]: Introduction

Professor JavaScript is a JavaScript online learning courses YouTube Channel. Students can learn how to develop codes with JavaScript from basic to advanced levels through the online courses in this YouTube channel.

From imperative to declarative JavaScript

In this post, I will explain why declarative code is better than imperative code. Then I will list some techniques to convert imperative JavaScript to a declarative one in common situations.

JavaScript Memory Management System

The main goal of this article is help to readers to understand that how memory management system performs in JavaScript. I will use a shorthand such as GC which means Garbage Collection. When the browsers use Javascript, they need any memory location to store objects, functions, and all other things. Let’s deep in dive that how things going to work in GC.