W3School TIY
编辑您的代码：
<!DOCTYPE html> <html> <head> <script src="../../ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script> <script> $(document).ready(function(){ $("button").click(function(){ alert("Value: " + $("#test").val()); }); }); </script> </head> <body> <p>姓名：<input type="text" id="test" value="米老鼠"></p> <button>显示值</button> </body> </html>
查看结果: