JSFiddle - React, Tailwind, and code Playground

by ExplosionPIlls

HTML

<input value="">
    <input type="submit" value="sq">

JavaScript

$.expr[':'].emptyInput = function (elem) {
    return $(elem).is(":input") && $(elem).val() === "";
};

$("[type=submit]").on('click', function () {
    console.log($(":emptyInput").length);
});