Using regular expressions to validate an email

   
<HTML>
<HEAD>
<TITLE></TITLE>
<SCRIPT LANGUAGE="JavaScript" TYPE="text/javascript">

function validateEmail(input) {
    var emailPattern = /^\w+@\w+(\.\w{3})$/
    if (emailPattern.test(input)) {
        document.write("valid")
    }
    else {
        document.write("NOT valid")
    }
}

</SCRIPT>
</HEAD>
<BODY>
<FORM>
Please enter an e-mail address and click somewhere else on the page:
<INPUT TYPE="text" SIZE="25" onBlur="validateEmail(this.value);">
</FORM>
</BODY>
</HTML>

1.	Searching and Replacing Substrings
2.	Regular Expression Tester
3.	The Regular Expression Tester
4.	Regular Expression Match Workshop
5.	Regular Expressions: Looking for a Match
6.	Regular Expressions: Extracting Data from a Match
7.	Regular Expressions: Replacing Strings via Regular Expressions
8.	check Date format
9.	Split comma number string
10.	Use regular expression to validate url
11.	String match pattern: (.*)
12.	Whether a string is a valid phone number
13.	String replace with regular expression
14.	Finding a substring within a string
15.	Whether a string contains only numerical data
16.	Validate an email
17.	Using regular expression (callback function)
18.	Split a string array and get token
19.	Trim a string with regular expression from both sides
20.	The Backslash in RegExp
21.	Regular Expression Switch
22.	Try your regular expression here

Using regular expressions to validate an email : Regular Expressions « Development « JavaScript DHTML

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