[SOLVED] Help please

[Andy-H]

Is there a JavaScript function (like the PHP !ctype_alnum()) to test if a string is alphanumeric. Also how do I test for a valid email address. Thanks for any help.

[jithavijayan]

if(document.form.email.value!=null||document.form.email.value!="")

{

email1 = /^([a-zA-Z0-9])+([\.a-zA-Z0-9_-])*@([a-zA-Z0-9])+(\.[a-zA-Z0-9_-]+)+$/;

if(!email1.test(document.form.email.value ) )

{

alert("Please enter the correct email address");

document.form.email.value="";

document.form.email.focus();

return false;

}

}

You can validate e-mail like this.