W3School TIY
编辑您的代码：
<!DOCTYPE html> <html> <head> <script src="../../ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"> </script> <script> $(document).ready(function(){ $("button").on("click",function(){ var version = $().jquery; alert("You are running jQuery version: " + version); }); }); </script> </head> <body> <button>显示版本号</button> </body> </html>
查看结果: