JavaScript Email validation
We can validate the email with the help of JavaScript. Here we check the condition related to any email id, like email it must have “@” and “.” sign and also email id must be atleast 10 character.
There are many criteria that need to be follow to validate the email id such as:
- email id must contain the @ and .(dot) character
- There must be at least one character before and after the @
- There must be at least two character after .(dot).
Example
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<!DOCTYPE html> <html> <head> <script> function email_validation() { var x=document.myform.email.value; var atposition=x.indexOf("@"); var dotposition=x.lastIndexOf("."); if (atposition<1 || dotposition<atposition+2 || dotposition+2>=x.length){ alert("Please enter a valid e-mail address \n atpostion:"+atposition+"\n dotposition:"+dotposition); return false; } } </script> </head> <body> <form name="myform" method="post" action="#" onsubmit="return email_validation();"> Email: <input type="text" name="email"><br/> <input type="submit" value="Register"> </form></body> </html> |