JSFiddle - React, Tailwind, and code Playground

HTML

<form action="#" method="POST">
    <input type="text" name="name">
    <input type="submit" id="cli">
</form>

JavaScript

$('#cli').live('click',function(e){
        e.preventDefault();
        if($('input[type="text"]').val()=='')alert('input is empty')
    })
});