jQuery实现跨域iframe接口方法调用_jquery

(function(global){
global.Cross = {
signalHandler: {},
on: function(signal, func){
this.signalHandler[signal] = func;
},
call: function(win, domain, signal, data, callbackfunc){
var notice = {"signal": signal, "data": data};
if(!!callbackfunc){
notice["callback"] = "callback_" + new Date().getTime();
Cross.on(notice["callback"], callbackfunc);
}
var noticeStr = JSON.stringify(notice);
win.postMessage(noticeStr, domain);
}
};
$(window).on("message", function(e) {
var realEvent = e.originalEvent,
data = realEvent.data,
swin = realEvent.source,
origin = realEvent.origin,
protocol;
try {
protocol = JSON.parse(data);
var result = global.Cross.signalHandler[protocol.signal].call(null, protocol.data);
if(!!protocol["callback"]){
Cross.call(swin, origin, protocol["callback"], {result: result});
}
if(/^callback_/.test(protocol.signal)){
delete Cross.signalHandler[protocol.signal];
}
} catch (e) {
console.log(e);
throw new Error("cross error.");
}
});
})(window);