Summary of usage of postMessage in html5 cross-domain communication_html5 tutorial skills

postMessagePortal.html 页面代码

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代码如下:

<script></p> <p>var targetOrigin = "http://22527.vhost20.boxcdn.cn";</p> <p>var defaultTitle = "Portal";<br>var notificationTimer = null;</p> <p>function messageHandler(e) {<br> if (e.origin == targetOrigin) {<br> notify(e.data);<br> } else {<br> // ignore messages from other origins<br> }<br>}</p> <p>function sendString(s) {<br> document.getElementById("widget").contentWindow.postMessage(s, targetOrigin);<br>}</p> <p><br>function notify(message) {<br> stopBlinking();<br> blinkTitle(message, defaultTitle);<br>}</p> <p>function stopBlinking() {<br> if (notificationTimer !== null) {<br> clearTimeout(notificationTimer);<br> }<br> document.title = defaultTitle;<br>}</p> <p>function blinkTitle(m1, m2) {<br> document.title = m1;<br> notificationTimer = setTimeout(blinkTitle, 1000, m2, m1)<br>}</p> <p>function sendStatus() {<br> var statusText = document.getElementById("statusText").value;<br> sendString(statusText);<br>}</p> <p>function loadDemo() {<br> document.getElementById("sendButton").addEventListener("click", sendStatus, true);<br> document.getElementById("stopButton").addEventListener("click", stopBlinking, true);<br> sendStatus();<br>}<br>window.addEventListener("load", loadDemo, true);<br>window.addEventListener("message", messageHandler, true);</p> <p></script>

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postMessageWidget.html页面的代码

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代码如下:

<script></p> <p>var targetOrigin = "http://www.weixiu0376.cn";</p> <p>// TODO whitelist array</p> <p>function messageHandler(e) {<br> if (e.origin === "http://www.weixiu0376.cn") {<br> document.getElementById("status").textContent = e.data;<br> } else {<br> // ignore messages from other origins<br> }<br>}</p> <p>function sendString(s) {<br> window.top.postMessage(s, targetOrigin);<br>}</p> <p>function loadDemo() {<br> document.getElementById("actionButton").addEventListener("click",<br> function() {<br> var messageText = document.getElementById("messageText").value;<br> sendString(messageText);<br> }, true);</p> <p>}<br>window.addEventListener("load", loadDemo, true);<br>window.addEventListener("message", messageHandler, true);</p> <p></script>

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