JSFiddle - React, Tailwind, and code Playground

HTML

<form action="#" method="post" id="">

    Title: <input id="titlenewtide" type="text" name="title" required> <br>

    Description: <textarea name="description" id="description"></textarea> <br>
    
    Tag:  <input id="newtag" type="text" name="newtag" required> <br>

    Category: <input type="radio" name="category" value="19" required> Animation

    <button type="submit" value="Submit" name="subnewtide" id="subnewtide" disabled="disabled">Submit</button>

</form>

JavaScript

jQuery("input[type='text']").on("keyup", function () {
    if (jQuery(this).val() != "" ) {
        if (jQuery("#titlenewtide").val() != '')
        {
            jQuery("#subnewtide").removeAttr("disabled");
        }
    } else {
        jQuery("#subnewtide").attr("disabled", "disabled");
    }
});