JSFiddle - React, Tailwind, and code Playground

by Niklas Keller

HTML

<input type="text" maxlength="6" id="check" data-minlength="6" /><br />
<input type="submit" value="send" />

JavaScript

$(function() {
    $('input[type="submit"]').prop('disabled', true);
    $('#check').on('input', function(e) {
        if(this.value.length === 6) {
            $('input[type="submit"]').prop('disabled', false);
        } else {
            $('input[type="submit"]').prop('disabled', true);
        }
    });
});