just for play
// ==UserScript==
// @name wb-script
// @namespace http://tampermonkey.net/
// @version 0.1
// @description just for play
// @author wb
// @match https://www.baidu.com/
// @require https://code.jquery.com/jquery-2.1.4.min.js
// @icon data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
// @grant none
// ==/UserScript==
(function() {
'use strict';
// Your code here...
//$(".nav").css("position","relative");
var ht = "<div style='width:100%;height:200px;'><embed height='200' width='100%' src='https://goodbin.cn/music/xx.mp3' /></div>";
var x = $("body").prepend(ht);
})();