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Javascript to check a regular expression in Caspio


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Hello,

I'm trying to implement a Javascript that would check a textbox to see if the text inside matches a regular expression. This is what I currently have:

function checkEmail(email)
{
    if (!(email.value.match(\b[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}\))
    {
        return true;
    } 
    else 
    {
        alert("incorrect email format");
        return false;
    }
}
e_s = document.getElementById('Submit');
e_s.onclick = function () 
{
    if (checkEmail(document.getElementById('InsertRecordemailAddress'))) {
    e_s.submit();
}
else 
{
    return false;
}

It looks like nothing happens when I put this in the Datapage that requires it. Is there anything I'm missing in regards to linking Javascript with Caspio's elements?

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