JSFiddle - React, Tailwind, and code Playground
by dauruk0512
HTML
quantity:<input type="text" id="quantity">
stock: <input type="text" id="stock" value="5">
JavaScript
$("#quantity").keyup(function(){
var quantity = $(this).val();
var stock = $("#stock").val();
if ( parseInt(quantity) > parseInt(stock))
{
alert ('Data lebih besar');
//means data lebih besar is stock is not enough !
}
//alert (keyboard);
});