What is Regex expression code generator?

The tool allows you to generate Regex expression code for javascript PHP go JAVA rb python language.

You could test your Regex expression here: Regex expression tester online, then use this tool to generate codes for using.

For examples, Match letter regex expression is ^[a-zA-z]*$

The tool will generate javascript Regex code:

var pattern = /^[a-zA-z]*$/,
	str = '';
console.log(pattern.test(str));

The code you will use in webpage could be

<script> 
var pattern = /^[a-zA-z]*$/,
	str = '';
console.log(pattern.test(str));

var str = 'abcdefgABCDEFG';
var result = str.match(re); 
document.writeln(result == null ? 'error<br><br>' : result[0] + '<br><br>'); 
</script>
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