微信中点击图片调用微信的图片浏览器

<script type="text/javascript">
   document.addEventListener("WeixinJSBridgeReady",function(){
   document.getElementById("smallimg").addEventListener(
　　"click",function(){
     WeixinJSBridge.invoke("imagePreview",{
         "urls":[
                    $("#smallimg")[0].src
                ],
                "current": $("#smallimg")[0].src
                })
             },!1)
          });
</script>