JSFiddle - React, Tailwind, and code Playground
by synz izynz
HTML
<input><br>
<button disabled="disabled">submit</button>
JavaScript
var input = $("input");
var target = $("button");
input.on("change keyup",function(){
if($(this).val() !== ''){
target.prop("disabled",false);
}else{
target.prop("disabled",true);
}
})