JavaScript Email Verification

I am designing my website and encountering an issue with the email checker. I can't figure out why it's not working, especially since I have never used JavaScript before. This is what I tried:

var flag=true;
    var st = Form1["email"].value.indexOf("@");
    if (st == -1)
    {
        alert("You must insert @ in the email address.");
        flag=false;
    }

If anyone could provide some assistance, I would greatly appreciate it. Thank you for your help!

Answer №1

If you're dealing with email validation, regular expressions can be a lifesaver. Here's an example of how you can use them:

function validateEmailAddress(email) { 
    var regex = /^(([^<>()[\]\\.,;:\s@\"]+(\.[^<()[]\\.,;:\s@"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
    return regex.test(email);
}

Answer №2

    var emailRegex = /^[0-9a-zA-Z]+([0-9a-zA-Z]*[-._+])*[0-9a-zA-Z]+@[0-9a-zA-Z]+([-.][0-9a-zA-Z]+)*([0-9a-zA-Z]*[.])[a-zA-Z]{2,6}$/;

   if (emailRegex.test(Form1["email"].value) == false) 
   {
   alert("The email address you entered is not valid!");
   }

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