<html><head><script src="https://libs.baidu.com/jquery/2.1.4/jquery.min.js"></script><script>$(document).ready(function(){ $("button").click(function(){ $("#div1").load("demo_test.txt"); });});</script></head><body><div id="div1"><h2>Let jQuery AJAX Change This Text</h2></div><button>Get External Content</button></body></html>