<script>  
    var imgsObj = $('img');  
    var imgs = new Array();  
    for(var i = 0; i < imgsObj.size(); i++){  
        imgs.push(imgsObj.eq(i).attr('src'));  
    }  
      
        $('img').on('click',function(){  
            WeixinJSBridge.invoke('imagePreview', {  
            'current': $(this).attr('src'),  
            'urls': imgs  
        });  
        });  
</script>