Community Learn Tools Library Leisure

English

Home > Web Front-end > JS Tutorial > Using the exec() method in regular expressions in JavaScript_Basics

Using the exec() method in regular expressions in JavaScript_Basics

WBOY

Release： 2016-05-16 15:54:49

Original

1408 people have browsed it

The exec method searches for a text string matched by a regular expression. If a match is found, the resulting array is returned; otherwise, null is returned.
Grammar

RegExpObject.exec( string );

Copy after login

Here are the details of the parameters:

string : The string to search for

Return value:

If a match is found, returns the matching text if not empty.

Example:

<html>
<head>
<title>JavaScript RegExp exec Method</title>
</head>
<body>
<script type="text/javascript">
  var str = "Javascript is an interesting scripting language";
  var re = new RegExp( "script", "g" );

  var result = re.exec(str);
  document.write("Test 1 - returned value : " + result); 

  re = new RegExp( "pushing", "g" );
  var result = re.exec(str);
  document.write("<br />Test 2 - returned value : " + result); 
</script>
</body>
</html>

Copy after login

This will produce the following results:

Test 1 - returned value : script
Test 2 - returned value : null

Copy after login

Related labels：

exec javascript

source：php.cn

Previous article：A brief introduction to the use of regular expressions in JavaScript_Basic knowledge Next article：Introduction to the Math.tan() method used to process tangent in JavaScript_Basic knowledge

Statement of this Website

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn