JavaScript Dev

JavaScript Dev

1576515318

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()

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

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javaScript Replace() | javaScript String Replace All
Lowa Alice

Lowa Alice

1624399200

JavaScript Strings Tutorial

JavaScript Strings

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Thanks for visiting and watching! Please don’t forget to leave a like, comment and share!

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Javascript String Replace: How to Replace String in JavaScript

Javascript String replace() is an inbuilt function that returns the new string with some or all matches of the pattern replaced by the replacement. The pattern can be the string or the RegExp or Regular Expression, and the replacement can be the string or the function to be called for each match. If the pattern is a  string, only the first occurrence will be replaced.

Javascript String replace()

The javascript string replace() method does not change the String object it is called on. It only returns a new string if we want to perform a global search and replace, including the g switch in the regular expression.

Syntax

The syntax of the Javascript string replace() method is the following.

string.replace(searchValue, newValue)

#javascript #javascript string replace #regexp #regular expression

Rahul Jangid

1622207074

What is JavaScript - Stackfindover - Blog

Who invented JavaScript, how it works, as we have given information about Programming language in our previous article ( What is PHP ), but today we will talk about what is JavaScript, why JavaScript is used The Answers to all such questions and much other information about JavaScript, you are going to get here today. Hope this information will work for you.

Who invented JavaScript?

JavaScript language was invented by Brendan Eich in 1995. JavaScript is inspired by Java Programming Language. The first name of JavaScript was Mocha which was named by Marc Andreessen, Marc Andreessen is the founder of Netscape and in the same year Mocha was renamed LiveScript, and later in December 1995, it was renamed JavaScript which is still in trend.

What is JavaScript?

JavaScript is a client-side scripting language used with HTML (Hypertext Markup Language). JavaScript is an Interpreted / Oriented language called JS in programming language JavaScript code can be run on any normal web browser. To run the code of JavaScript, we have to enable JavaScript of Web Browser. But some web browsers already have JavaScript enabled.

Today almost all websites are using it as web technology, mind is that there is maximum scope in JavaScript in the coming time, so if you want to become a programmer, then you can be very beneficial to learn JavaScript.

JavaScript Hello World Program

In JavaScript, ‘document.write‘ is used to represent a string on a browser.

<script type="text/javascript">
	document.write("Hello World!");
</script>

How to comment JavaScript code?

  • For single line comment in JavaScript we have to use // (double slashes)
  • For multiple line comments we have to use / * – – * /
<script type="text/javascript">

//single line comment

/* document.write("Hello"); */

</script>

Advantages and Disadvantages of JavaScript

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Hire Dedicated JavaScript Developers -Hire JavaScript Developers

It is said that a digital resource a business has must be interactive in nature, so the website or the business app should be interactive. How do you make the app interactive? With the use of JavaScript.

Does your business need an interactive website or app?

Hire Dedicated JavaScript Developer from WebClues Infotech as the developer we offer is highly skilled and expert in what they do. Our developers are collaborative in nature and work with complete transparency with the customers.

The technology used to develop the overall app by the developers from WebClues Infotech is at par with the latest available technology.

Get your business app with JavaScript

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Niraj Kafle

1589255577

The essential JavaScript concepts that you should understand

As a JavaScript developer of any level, you need to understand its foundational concepts and some of the new ideas that help us developing code. In this article, we are going to review 16 basic concepts. So without further ado, let’s get to it.

#javascript-interview #javascript-development #javascript-fundamental #javascript #javascript-tips