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JavaScript exec() Method
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 |
Browser Support
The exec() method is supported in all major browsers.
Example
Example
Do a global search, and test for "Hello" and "W3Schools" in a string:
<script>
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>
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
Returned value: null
Try it yourself »
JavaScript RegExp Object
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