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register:93 Uncaught TypeError: Cannot read property 'checkValidity' of undefined
    at HTMLInputElement.validat

this is the error i get when i try to check if the validation is working on the client page. Below is the script

    $(document).on("submit", ".needs-validation", validate);
    $(".needs-validation input").blur(validate);

    function validate(event)
        if ($(".need-validation")[0].checkValidity() == false || $(".email-exists").text() != "")

and also i have the bootstrap 4.1.1 running with jquery3.3.1 and also the popper.js 1.14.3

ironically i can a similar app with the same installation and it working on it.

Taiwo Kaffo

What I have tried:

1. I have uninstalled and reinstalled all the apps
2. I have remove some new apps that was not in the old one
3. I have checked the bundle file and the settings are the same the two apps
Updated 1-Apr-20 23:25pm

1 solution

A simple spelling mistake:
$(".needs-validation input").blur(validate);

function validate(event)
    if ($(".need-validation")[0].checkValidity() == false || $(".email-exists").text() != "")
Share this answer
taiwokaffo 2-Apr-20 4:55am    
thanks i really appreciate you..................not really looking at that.
Richard MacCutchan 2-Apr-20 5:12am    
Try doing the basic checks before you post a question. It can save you a lot of time.

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