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jQuery cross-domain iframe interface call (with code)

php中世界最好的语言Original: 2018-04-26 15:49:492230browse

This time I bring you jQueryCross-domain iframe interface call (with code), what are the precautions for jQuery cross-domain call to iframe interface, the following is a practical case , let’s take a look.

cross.js

(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);
a.html

<!doctype HTML>
<html>
  <head>
    <script src="jquery-1.8.3.min.js"></script>
    <script src="cross.js"></script>
    <script>
      function call_b(){
        var ifw = $("#ifr")[0].contentWindow;
        //调用iframe子页面的公开的test接口, 子页面域名为http://localhost:8088
        Cross.call(ifw,"http://localhost:8088","test",{t: $("#txt").val()});
      }
    </script>
  </head>
  <body>
    <input id="txt" type="text"/>
    <button onclick="call_b()">call</button>
    <iframe id="ifr" src="http://localhost:8088/b.html"></iframe>
  </body>
</html>

<!doctype HTML>
<html>
  <head>
    <script src="jquery-1.8.3.min.js"></script>
    <script src="cross.js"></script>
    <script>
    //对外公开一个接口命名为test
    Cross.on("test", function(data){
      alert(data.t);
    });
    </script>
  </head>
  <body>
  </body>
</html>

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!

jQuery cross-domain iframe interface call (with code)

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