详情页里图片点击放大查看更清楚的图片

 setTimeout(function(){
       var tempImg = document.getElementsByClassName("msg_Img");
       for (var i = 0; i < tempImg.length; i++) {
          tempImg[i].onclick=function(){
            var tempLisjp = [];   
              tempLisjp.push(
                this.src
              );        
            this.instanceImage = ImagePreview(tempLisjp);
          }
       };    
   },500);