function arrayToJson(o) {
  var r = [];
  if (typeof o == "string") return "\"" + o.replace(/([\'\"\\])/g, "\\$1").replace(/(\n)/g, "\\n").replace(/(\r)/g, "\\r").replace(/(\t)/g, "\\t") + "\"";
  if (typeof o == "object") {
    if (!o.sort) {
      for (var i in o)
        r.push(i + ":" + arrayToJson(o[i]));
      if (!!document.all && !/^\n"toString:" + o.toString.toString());
      }
      r = "{" + r.join() + "}";
    } else {
      for (var i = 0; i < o.length; i++) {
        r.push(arrayToJson(o[i]));
      }
      r = "[" + r.join() + "]";
    }
    return r;
  }
  return o.toString();
}
//这个是调用微信图片浏览器的函数
function imagePreview(curSrc, srcList) {
  if (!curSrc || !srcList || srcList.length == 0) {
    return;
  }
  WeixinJSBridge.invoke('imagePreview', {
    'current': curSrc,
    'urls': srcList
  });
};
(function ($) {
  var aa = [];
  var i = 0;
  var src = [];
  var json = null;
  aa = $(".img");
  for (i = 0; i < aa.length; i++) {
    src[i] = aa[i].src;  //把所有的src存到数组里
  }
  var srcList = arrayToJson(src); //转换成json并赋值给srcList
  $('.pro').click(function () {
    imagePreview(this.src, srcList);
  });
})(jQuery);