Nice easy way to validate email with JS.Code:<!-- Paste this code into an external JavaScript file named: validEmail.js**--> function Validate_String(string, return_invalid_chars) { **valid_chars = '1234567890-_.^~abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'; **invalid_chars = ''; **if(string == null || string == '') **** return(true); **//For every character on the string.** **for(index = 0; index < string.length; index++) { ****char = string.substr(index, 1);************************ **** ****//Is it a valid character? ****if(valid_chars.indexOf(char) == -1) { ******//If not, is it already on the list of invalid characters? ******if(invalid_chars.indexOf(char) == -1) { ********//If it's not, add it. ********if(invalid_chars == '') **********invalid_chars += char; ********else **********invalid_chars += ', ' + char; ******} ****} **} ************ **//If the string does not contain invalid characters, the function will return true. **//If it does, it will either return false or a list of the invalid characters used **//in the string, depending on the value of the second parameter. **if(return_invalid_chars == true && invalid_chars != '') { ****last_comma = invalid_chars.lastIndexOf(','); ****if(last_comma != -1) ******invalid_chars = invalid_chars.substr(0, $last_comma) + ******' and ' + invalid_chars.substr(last_comma + 1, invalid_chars.length); ****return(invalid_chars); ****} **else ****return(invalid_chars == ''); } function Validate_Email_Address(email_address) { **//Assumes that valid email addresses consist of user_name@domain.tld **at = email_address.indexOf('@'); **dot = email_address.indexOf('.'); **if(at == -1 || ****dot == -1 || ****dot <= at + 1 || ****dot == 0 || ****dot == email_address.length - 1) ****return(false); **** **user_name = email_address.substr(0, at); **domain_name = email_address.substr(at + 1, email_address.length);****************** **if(Validate_String(user_name) === false || ****Validate_String(domain_name) === false) ****return(false);******************** **return(true); } <!-- Paste this code into the HEAD section of your HTML document. **** You may need to change the path of the file.**--> <script type="text/javascript" src="validEmail.js"></script>