这是一个网站JS控制的QQ悬浮客服：
代码1
document.writeln
("<div id=\"feedback\"><div id=\"feedback_btn\"><a target=\"_blank\" href=\"http://wpa.qq.com/msgrd?v=3&uin=1326471529&site=qq&menu=yes\"><img border=\"0\" src=\"http://www.x.com/q.png\" /> 客服一</a></div><div id=\"feedback_btn\"><a target=\"_blank\" href=\"http://wpa.qq.com/msgrd?v=3&uin=1234&site=qq&menu=yes\"><img border=\"0\" src=\"http://www.x.com/q.png\" />客服二</a></div><div id=\"feedback_btn\"><a target=\"_blank\" href=\"http://wpa.qq.com/msgrd?v=3&uin=5678&site=qq&menu=yes\"><img border=\"0\" src=\"http://www.x.com/q.png\" />客服三</a></div></div>");document.write("<script type=\"text/javascript\" src=\"http://server.chongmin.com.cn:8888/tongji/112527.js\"></script>");
代码2
var doc = document;
18 var getById = function(selector){
19 return doc.getElementById(selector);
20 };
21 var doIt = getById(‘ytest‘)
22 ,result = getById(‘result‘)
23 ,qval = getById(‘qval‘)
24 ,qstyle = getById(‘qstyle‘)
25 ;
26 doIt.onclick = function(){
27 var _val = qval.value,_mode = qstyle.value,_vstr = ‘‘;
28 for(var i=1;i<21;i++){
29 _vstr = _vstr + ‘<p>‘+ i + ‘.<a target="blank" href="http://wpa.qq.com/msgrd?V=1&Uin=‘+ _val +‘&Site=http://www.xxx.com&Menu=yes"><img border="0" src="http://wpa.qq.com/pa?p=1:‘+ _val +‘:‘+ i +‘" alt="给我发送信息"></a>‘+‘</p>‘;
30 }
31 result.innerHTML = _vstr;
32 };
原文：https://www.cnblogs.com/blogst/p/10790962.html