JavaScript source Property: RegExp Object


A read-only property that contains the text of the pattern, excluding the forward slashes and "g" or "i" flags.

The source property of the RegExp object represents the text of the pattern being used for pattern matching.


Implemented in JavaScript 1.2




The following web document demonstrates how the source property can be used.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<meta http-equiv="content-type" content="text/html; charset=iso-8859-1" />
<title>JavaScript Regexp source Property : Example-1</title>
<h1 style="color: red">JavaScript Regexp source Property</h1>
<hr />
<script type="text/javascript">
//This is done to make the following JavaScript code compatible to XHTML. <![CDATA[
// Create a new RegExp object.
newexp = new RegExp("fox","g");
// Create a string.
str1 = "The quick browm fox jumps over the lazy dog.";
myArray = newexp.exec(str1);
// Display the source
document.write("The source is : " +  newexp.source);

View the example in the browser

Supported Browser

Internet Explorer 7 Firefox 3.6 Google Chrome 7 Safari 5.0.1 Opera 10
Yes Yes Yes Yes Yes

See also:

JavaScript Core objects, methods, properties.

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JavaScript: Tips of the Day

Sort Number Arrays

JavaScript arrays come with a built-in sort method. This sort method converts the array elements into strings and performs a lexicographical sort on it by default. This can cause issues when sorting number arrays. Hence here is a simple solution to overcome this problem.

[0,10,4,9,123,54,1].sort((a,b) => a-b);
>>> [0, 1, 4, 9, 10, 54, 123]

You are providing a function to compare two elements in the number array to the sort method. This function helps us the receive the correct output.

Ref: https://bit.ly/3adlwNy