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JavaScript exec() Method

RegExp Object Reference JavaScript RegExp Object

Definition and Usage

The exec() method tests for a match in a string.

This method returns the matched text if it finds a match, otherwise it returns null.

Syntax

RegExpObject.exec(string)

Parameter Description
string Required. The string to be searched

Example

Example

Do a global search, and test for "Hello" and "W3Schools" in a string:

<script type="text/javascript">

var str="Hello world!";
//look for "Hello"
var patt=/Hello/g;
var result=patt.exec(str);
document.write("Returned value: " + result);

//look for "W3Schools"
patt=/W3Schools/g;
result=patt.exec(str);
document.write("<br />Returned value: " + result);

</script>

The output of the code above will be:

Returned value: Hello
Returned value: null

Try it yourself »

RegExp Object Reference JavaScript RegExp Object

From http://www.w3schools.com (Copyright Refsnes Data)