function IsPC() {    var userAgentInfo = navigator.userAgent;    var Agents = new Array("Android", "Linux","iPhone", "SymbianOS", "Windows Phone", "iPad", "iPod");    var flag = true;    for (var v = 0; v < Agents.length; v++) {        if (userAgentInfo.indexOf(Agents[v]) > 0) { flag = false; break; }    }    return flag; }  注释：

如果  flag  返回 false;     手机端  　　　flag  返回  turn     PC端；

if(IsPC()){    var size =0.5,title = document.title ;    document.querySelector('.scene_title').innerHTML=title;    document.querySelector('.p-index').style.cssText = "position:relative;height:486px;overflow:hidden;cursor:pointer";    }else{    $("#code").remove();    $('.p-index').clone().appendTo($("body"));    $(".phone_panel").remove();    document.querySelector('.p-index').style.height = (document.body.clientHeight ||  document.documentElement.clientHeight )+"px"}