• window.postMessage 在iframe父子页面数据传输


    介绍

    https://developer.mozilla.org/zh-CN/docs/Web/API/Window/postMessage

    window.postMessage

     

    发送方

    接收方

     示例:父页面(parentpage_copy.html)传值给子页面(subpage_copy.html)

    parentpage_copy

    <!DOCTYPE html>
    <html lang="en">
    
    <head>
      <meta charset="UTF-8">
      <meta name="viewport" content="width=device-width, initial-scale=1.0">
      <meta http-equiv="X-UA-Compatible" content="ie=edge">
      <title>父页面</title>
    </head>
    
    <body>
      <p>2003年参演中国首部犯罪题材的电视剧《拯救少年犯》 [17] ,该剧由10个故事组成,文章是其中一个故事的男主角。
        2004年参演叶京导演,改编自王朔小说的电视剧《与青春有关的日子》 [18] ,剧中文章饰演卓越一角,开始在影视圈崭露头角 [1] 。
        2005年拍摄第一部古装剧《锦衣卫》,该剧由张黎导演
        电视剧《奋斗》剧照
        电视剧《奋斗》剧照(19张)
      </p>
    
    
      <iframe src="http://****/test/iframe/subpage_copy.html" frameborder="0" id="iframe_id" width="100%" scrolling="no"></iframe>
      <script src="jquery-2.1.4.min.js"></script>
      <script>
        var iframe = document.getElementById('iframe_id');
        var iframe_cw = iframe.contentWindow;
    
        window.onload = function(){
          iframe_cw.postMessage({height:"300px"}, "*"); //通信 * 可以指定域名 
        }
      
      </script>
    </body>
    
    </html>
    子页面(subpage_copy.html)
    <html data-width="375" data-percent="50" class="iosx1" style="font-size: 50px;">
    
    <head>
      <meta charset="utf-8">
      <meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1,minimum-scale=1,user-scalable=0">
      <title>头条巴士</title>
      <style>
        html {
          font-family: PingFangSC-Regular, HelveticaNeue-Thin, "微软雅黑", helvetica, verdana, sans-serif, roboto, NotoSansHand-Regular, "冬青黑体", "华文细黑";
          -ms-text-size-adjust: 100%;
          -webkit-text-size-adjust: 100%;
          height: 100%;
        }
    
        body {
          margin: auto;
          line-height: 1.5;
          color: #000;
          overflow-x: hidden;
          -webkit-overflow-scrolling: touch;
          height: 100%;
          padding-bottom: constant(safe-area-inset-bottom);
          padding-bottom: env(safe-area-inset-bottom);
        }
    
        h1,
        h2,
        h3,
        h4,
        h5,
        h6,
        p,
        figure,
        form,
        blockquote {
          margin: 0;
        }
    
        h1 {
          font-size: 0.44rem;
          color: #393939;
          line-height: 0.62rem;
        }
    
        .content {
          padding: 0.2rem 0.36rem 0.2rem 0.36rem;
        }
    
        .content .source {
          font-size: 0.24rem;
          line-height: 0.33rem;
          margin-top: 0.2rem;
          margin-bottom: 0.34rem;
          color: #acacac;
        }
    
        .content,
        .content p {
          color: #393939;
          font-size: 0.36rem;
          line-height: 0.6rem;
          text-align: justify;
          margin-bottom: 0.4rem;
        }
    
        .content figure a {
          display: block;
          position: relative;
          background-image: url(data:image/png;base64,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);
          background-color: hsla(0, 0%, 59%, .1);
          background-repeat: no-repeat;
          background-position: 50%;
          overflow: hidden;
          background-size: 40%;
        }
    
        .content img {
          width: 100%;
        }
    
        .content figure a img {
          position: absolute;
          left: 0;
          top: 0;
        }
    
        .bus_back {
          line-height: .8rem;
          color: #000;
          display: block;
          text-align: right;
          margin: .4rem .4666rem;
          font-size: .36rem;
          color: #ff6060;
        }
      </style>
    </head>
    
    <body style=" 375px;">
    
      <script>
        !(function (e, t) {
          var n = e.documentElement,
            i = "orientationchange" in window ? "orientationchange" : "resize",
            d = (/iPad|iPhone|iPod/.test(navigator.userAgent) && !window.MSStream, function () {
              var t = n.clientWidth;
              t && (t >= 750 ? (t = 750, e.body.style.width = "750px") : e.body.style.width = t + "px", n.style
                .fontSize = 100 * (t / 750) + "px", n.dataset.width = t, n.dataset.percent = 100 * (t / 750))
            });
          d(), e.documentElement.classList.add("iosx" + t.devicePixelRatio), e.addEventListener && t.addEventListener(i,
            d, !1)
        })(document, window)
      </script>
      <div class="content">
        <section class="header">
            <p id="messageHTML"></p>
          <h1>小沈阳老婆经历了啥?如今瘦身成功,长相撞脸韩国女星孔孝真</h1>
          <p class="source">
            2019-10-23 18:00:57 来源:火姿微观
          </p>
        </section>
        <section>
          <p> </p>
          <p> </p>
          <p>沈春阳,她是著名的二人转演员,更是知名艺人小沈阳的妻子。二人转出身的她,在喜剧舞台上游刃有余,同时在演戏方面,也是可以做到得心应手。</p>
          <p>在电视剧樱桃中,沈春阳挑大梁,为众人带来了一部乡村苦情剧。这部电视剧,感动了无数的观众,更是让沈春阳的名字多次被人提起。但后来的沈春阳,就似乎回归家庭了,她很少出现在公众的面前,似乎在专心的照顾家庭。</p>
          <p type="image"> <span> </span></p>
          <figure class="figure-photo-img"><a data-size="640x536"
              data-href="https://ttbs.guangsuss.com/image/bf8ed440e71d2552e0a3d4b4fd8eaf16"
              style="padding-bottom: 83.75%;"><img
                data-original="https://ttbs.guangsuss.com/image/bf8ed440e71d2552e0a3d4b4fd8eaf16"
                src="https://ttbs.guangsuss.com/image/bf8ed440e71d2552e0a3d4b4fd8eaf16" class="lazy"
                data-was-processed="true" style="display: block;"></a></figure>
          <p></p>
          <p></p>
          <p>不过,即便是沈春阳如此低调,网友还是发现了一些不一样的事情。</p>
          <p>有网友就发现,如今的沈春阳,长相大气,更是肤白貌美,还撞脸了韩国的知名演员孔孝真。这样大的变化,也让不少的网友好奇,小沈阳的老婆究竟是经历了什么。</p>
          <p type="image"> <span> </span></p>
          <figure class="figure-photo-img"><a data-size="640x496"
              data-href="https://ttbs.guangsuss.com/image/ab5f54e4e42aa28b291ddb90ed876ec9"
              style="padding-bottom: 77.50%;"><img
                data-original="https://ttbs.guangsuss.com/image/ab5f54e4e42aa28b291ddb90ed876ec9"
                src="https://ttbs.guangsuss.com/image/ab5f54e4e42aa28b291ddb90ed876ec9" class="lazy"
                data-was-processed="true" style="display: block;"></a></figure>
          <p></p>
          <p></p>
          <p>其实,这也未必是沈春阳做什么了!如今的沈春阳,手中有钱,家庭幸福,什么都不愁的她,自然是要有些变化的。更何况,沈春阳的五官还是不错的,也是有点像韩国女星孔孝真的。如今的沈春阳瘦下来之后,会撞脸孔孝真,其实到也正常,不是吗?
          </p>
          <p type="image"> <span> </span></p>
          <figure class="figure-photo-img"><a data-size="640x409"
              data-href="https://ttbs.guangsuss.com/image/3f23683cbfb2bc0e798c69200c658343"
              style="padding-bottom: 63.91%;"><img
                data-original="https://ttbs.guangsuss.com/image/3f23683cbfb2bc0e798c69200c658343" src="/static/img/1.gif"
                class="lazy" data-was-processed="true"></a></figure>
          <p></p>
          <p></p>
          <p>而且,观众对沈春阳的印象,大多都停留在了她所饰演的角色当中。</p>
          <p type="image"> <span> </span></p>
          <figure class="figure-photo-img"><a data-size="339x230"
              data-href="https://ttbs.guangsuss.com/image/fecca0fce8eeeb4f8e9f34bbc5805d45"
              style="padding-bottom: 67.85%;"><img
                data-original="https://ttbs.guangsuss.com/image/fecca0fce8eeeb4f8e9f34bbc5805d45" src="/static/img/1.gif"
                class="lazy" data-was-processed="true"></a></figure>
          <p></p>
          <p></p>
          <p>当年的沈春阳,与小沈阳一起搭档舞台的时候,她穿着土气的毛衣,背着一个奇怪的小包,还剪着一个土土的锅盖头,戴着一个黑框眼镜。这大概是不少人对沈春阳的第一印象,但这样的形象,也让不少的人觉得沈春阳似乎就应该长这样。</p>
          <p type="image"> <span> </span></p>
          <figure class="figure-photo-img"><a data-size="640x492"
              data-href="https://ttbs.guangsuss.com/image/0ee40309dfaf5d5419fbcd560c3eb065"
              style="padding-bottom: 76.88%;"><img
                data-original="https://ttbs.guangsuss.com/image/0ee40309dfaf5d5419fbcd560c3eb065" src="/static/img/1.gif"
                class="lazy" data-was-processed="true"></a></figure>
          <p></p>
          <p></p>
          <p>更不用说,在樱桃中,她又饰演的是一个精神有些问题的农村妇女。所以,在一般人的印象当中,沈春阳似乎就不应该与时尚挂钩。但如今的沈春阳,却用自己的真实样貌告诉观众,自己其实也还是挺漂亮的。</p>
        </section>
        <a class="bus_back" href="/a/1684281751425389876/?qid=z00321">
          <svg t="1561693688103" class="icon" viewBox="0 0 1194 1024" version="1.1" xmlns="//www.w3.org/2000/svg"
            p-id="1183" width="200" height="200" style="
           0.36rem;height: 0.36rem;vertical-align: middle;margin-right: 0.15rem;margin-top: -0.1rem;">
            <path d="M795.497086 512.426311L0 1024V0zM1193.67194 512.426311l-795.497086 511.573689V0z" fill="#ff6060"
              p-id="1184"></path>
          </svg>查看全文</a>
    
        <section class="bt_no" style="display: none">
          <div id="h5_xuni" class="h5_xuni bt_no" data-loc="h5_xuni" data-id="1568287861bCBpObB6Wp8szzXw5d7a2c75eb107"
            data-ad_type="baidu_ssp" data-strategy_id="1832" data-filter="1832"></div>
        </section>
        <section class="bt_no">
          <div id="h5_fz" class="h5_fz bt_no" data-loc="h5_fz" data-id="1567590343CsSWTNdGv0EU86ve5d6f87c7bc3b2"
            data-ad_type="baidu_ssp" data-strategy_id="2196" data-filter="2196">
            <script type="text/javascript" src="/static/js/clipboard.js"></script>
          </div>
        </section>
        <section class="bt_no">
          <div id="h5_tz" class="h5_tz bt_no" data-loc="h5_tz"></div>
        </section>
      </div>
      <script src="jquery-2.1.4.min.js"></script>
      <script>
        window.addEventListener('message', function (event) {
         document.getElementById('messageHTML').innerText = event.data.height;
          
        }, false);
      </script>
    </body>
    
    </html>
    View Code

    简单介绍主要代码  监听Message

     <script>
        window.addEventListener('message', function (event) {
         document.getElementById('messageHTML').innerText = event.data.height;
          
        }, false);

    在子页面就会看到

    红框上部分为  :父页面内容

    红框区域为: 父传字页面值。。。在子页面显示

    红框下部分为: 子页面区域

    ===========================================================================

    接下来,,,,

    子页面传给父页面值,具体点,把子页面内容在父页面全部展示;让iframe能自适应文章内容

    没有传值前,主页面加载iframe内容,未全展示。。。。如下:

     获取子页面内容区域高度。。。传给父页面。是不是就OK了。。。。。赶紧试一试,不然就忘了。。。人到中年。。。写代码全靠copy

    子页面代码

    <script>
    
        window.onload = function(){
          var c_h = $(".content").height(); // 获取内容区域高度
          window.parent.postMessage({height:c_h}, 'http://127.0.0.1'); // 可以指定域名
        }
      </script>

    父页面代码

     <script>
        var iframe = document.getElementById('iframe_id');
        var iframe_cw = iframe.contentWindow;
    
    
        window.addEventListener('message', function (event) {
          iframe.style.height = event.data.height + 'px'
        }, false);
      
      </script>

    传值后:内容全部展示

    ==============================================================

    接下来,,,串连下。。父传子,子又传父(互相传值)

    父页面

    <script>
        var iframe = document.getElementById('iframe_id');
        var iframe_cw = iframe.contentWindow;
    
        //发送消息
        window.onload = function(){
          var message = 'Hello!  The time is: ' + (new Date().getTime());
          iframe_cw.postMessage(message, "*");
        }
    
        window.addEventListener('message', function (event) {
          console.log('index:  ' + event.data);
          iframe.style.height = event.data.height + 'px'
        }, false);
      </script>

    子页面

     <script>
        window.addEventListener('message', function (event) {
          console.log('message lister:  ' + event.data, event);
          var c_h = $(".content").height();
          event.source.postMessage({height:c_h}, event.origin);
        }, false);
      </script>
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  • 原文地址:https://www.cnblogs.com/congxueda/p/11825820.html
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