<html><head><script src="https://libs.baidu.com/jquery/2.1.4/jquery.min.js"></script><script>$(document).ready(function(){ $("button").click(function(){ alert("Value: " + $("#test").val()); });});</script></head><body><p>Name: <input type="text" id="test" value="Mickey Mouse"></p><button>Show Value</button></body></html>