借用layer让弹层不限制在iframe内部

使用方法：

1 除了layer的success，end，cancel回掉函数以外其它的layer参数都可以使用。

2 使用前在layer的js后边把该js引入（可以命名为layerExtend）。

3 layerExtend中只包含一个endHandle回掉方法并且有一个data参数，用于关闭当前弹出层并给上一个弹层回传值。

4 当前弹层给上一个弹层设置值只需要在触发事件时调用zlayer.returnData("你的回传值");   而上一个弹出层取值时只需要使用endHandle中的data参数即可。

5 例如：

  $("#btn1").click(function () {
        zlayer.open({
            content: "test2.html",
            isRefresh: true,//是否刷新上及页面
            endHandle: function (data) {
                $("#div1").html(data); //接收回传值后的处理
            }
        });
    });

完整插件代码：（有兴趣的可以看下Zlayer和zlayer在不同的场景有何不同）

/*!
 @Name：layerExtend辅助弹层
 @Author：ZZQ
 */
; window.Zlayer = (function () {
    "use strict";
    var _dataMap = {}, _indexArray = [], _refresh = 0 & 1, _inputParamsArray = [],
        refreshParent = function () {
            _refresh = 1;
        },
    _checkNullObject = function (obj) {
        if (typeof obj === "object" && !(obj instanceof Array)) {
            var hasProp = 0;
            for (var prop in obj) {
                hasProp = 1; break;
            }
            if (!!hasProp) return 0; return 1;
        }
    },
    _pop = function (array) {
        var _ret = _indexArray.pop();
        if (typeof (_ret) == "undefined") throw "dataArray remove item fail!"; return _ret;
    },
     _saveMetaData = function (layero, index) {
　　　　　if (_indexArray.indexOf(index) != -1) return;
         _indexArray.push(index);
         _dataMap[_indexArray[_indexArray.length - 1]] = { "backData": null, "currDiv": layero };
     },
     _postData = function (params) {
         _inputParamsArray.push(params);
     },
     returnData = function (data) {
         _dataMap[_indexArray[_indexArray.length - 1]].backData = data;
     },
     getInputParams = function () {
         return _inputParamsArray[_inputParamsArray.length - 1];
     },
     open = function (options) {
         options = options || {};
         if (!!_checkNullObject(options)) throw "open Function input is empty object!";
         _postData(!!options.inputParams && options.inputParams || null);
         !options.title && delete options.title;
         delete options.success;
         delete options.end;
         delete options.cancel;
         var _layerOptions = {
             type: 2,
             title: "...",//input
             content: "",//input
             area: ['900px', '500px'],//input
             maxmin: 0,
             zIndex: layer.zIndex,
             isRefresh: 0,//input
             shadeClose: 0,
             success: function (layero, index) {//index不是连续的
                 _saveMetaData(layero, index);
             },
             end: function () {
                 if (_indexArray.length <= 0) {
                     options.endHandle(-1);
                     return;
                 }
                 var _ret = _pop(_indexArray);
                 !!_refresh && (options.isRefresh = 1);
                 _inputParamsArray.pop();
                 options.endHandle(_dataMap[_ret].backData);//如果没有设置需要的层级返回值则返回空串
                 delete _dataMap[_ret];
                 if (!!options.isRefresh) {
                     if (_indexArray.length > 0) {
                         $(_dataMap[_indexArray[_indexArray.length - 1]].currDiv).find("iframe").get(0).contentWindow.location.reload();
                         _pop(_indexArray);
                     } else window.location.reload();
                 }
                 _refresh = 0 & 1;
             },
             cancel: function () { }
         };
         $.extend(_layerOptions, options);
         layer.open(_layerOptions);
     },
     openCompatible = function (title, content, width, height, inputParams, isRefresh, callBack) {
         var _tmpOptions = {
             title: title,//input
             content: content,//input
             area: [width, height],//input
             isRefresh: isRefresh,//input
             inputParams: inputParams,//input
             endHandle: callBack
         };
         open(_tmpOptions);
     },
     findTopIframe = function () {
         var curr = self,
             iframeObj = curr;
         while (curr != window.top) {
             iframeObj = curr;
             curr = curr.parent;
         }
         return iframeObj.Zlayer;
     },
     close = function () {
         layer.close(_indexArray[_indexArray.length - 1]);
     },
     exit = function () {
         $(_dataMap[_indexArray[_indexArray.length - 1]].currDiv).find("span").find("a").click();
     };
    return {
        refreshParent: refreshParent,
        target: findTopIframe,
        open: open,
        exit: exit,
        close: close,
        ShowModelDialog: openCompatible,
        returnData: returnData,
        getInputParams: getInputParams
    };
})();
window.zlayer = Zlayer.target();