postmessage页面传值

时间 2019-11-18

标签 postmessage 页面繁體版

原文原文链接

域名：http://localhost:3000/test1.html 向http://localhost:3002/test2.html发送数据html

test1.html:浏览器

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<iframe id="iframe" src="http://localhost:3002/test2.html" name="myIframe"></iframe>
<input type="text" id="msg">
<button id="btn">发送</button>
</body>
<script>
    window.onload=function () {
        var msgDom=document.getElementById('msg'),
        btn=document.getElementById('btn');
        btn.onclick=function () {
            var msg=msgDom.value;
            var iframeWin=myIframe.window;
            iframeWin.postMessage(msg,'http://localhost:3002/test2.html')
                //h5规范：能够发送JavaScript的任意基本类型或可复制的对象，但不是全部浏览器都兼容，有的            
               //浏览器只能处理字符串，因此须要用JSON.stringify()序列化
                //必须是目标窗口，iframeName.window或者window.open
        }
    }
</script>
</html>

test2.html:post

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
test2.html接受数据
</body>
<script>
    window.onload = function() {
            if(window.addEventListener){
                window.addEventListener("message", handleMessage, false);
            }
            else{
                window.attachEvent("onmessage", handleMessage);
            }
             function handleMessage(event) {
                 event = event || window.event;
                     if(event.origin === 'http://localhost:3000') {
                             console.log('接受数据',event.data);
                         }
                 }
         }
</script>
</html>