JSFiddle - React, Tailwind, and code Playground

by Brad Christie

HTML

<input type="text" id="left" size="3" />
<input type="text" id="right" size="3" />
<input type="button" id="swap" value="Swap" />

JavaScript

$('#swap').click(function(){
    var i = parseInt($('#left').val(),10), j = parseInt($('#right').val(),10)
    i = i + j ; j = i - j ; i = i - j ;
    $('#left').val(i); $('#right').val(j);
});