<script>
????//手機淘寶顯示
????var?metaEl?=?doc.createElem('meta');
????var?scale?=?isRetina??0.5?:1;
????metaEl.setAttribute('name','viewport');
????metaEl.setAttribute('content','initial-scale='+scale+',maximum-scale='+scale+',minimum-scale='+scale+',user-scalable=no');
????if(docEl.firstElementChild){
????????document.documentElement.firstElementChild.appendChild(metaEl);
????}else{
????????var?wrap?=?doc.createElem('div');
????????wrap.appendChild(metaEl);
????????document.write(wrap.innerHTML);
????}
</script>