Make form invalid in javascript

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I made a mobile field as invalid by adding custom validity. But form is getting valid even after field is invalid.

var field = document.getElementById(textBoxId); field.setCustomValidity("Duplicate Mobile");

var $form = $(".modal-form");
$.validator.unobtrusive.parse($form);
if ($form.valid()) {

// $form is always valid
}

Can you suggest if i need to add any other check here?

Thanks,

What I have tried:

tried reportValidity, checkValidity. Didnt work.

Posted 25-Dec-20 19:20pm

Mada Naga Sankar

Updated 27-Dec-20 1:19am

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Member 14594830 · Answer 1 · 2020-12-27T01:19:00

Unfortunately, you can't style pseudo classes in JavaScript, since they're not real elements, they don't exist in the actual DOM.

With vanilla JavaScript you'd use the validation API.

In jQuery you can simply do this, http://jsfiddle.net/elclanrs/Kak6S/

if ( $input.is(':invalid') ) { ... }
Or alternatively, can I override the validation method used?

If you're using HTML5 validation, then stick to the markup. Otherwise, you can disable HTML5 validation with $form.attr('novalidate', 'novalidate') and use JS to validate your fields, and then adding valid or invalid classes where needed. I made a plugin that works like this to support non HTML5 browsers.