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VUE组件如何与iframe通信问题
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vue组件内嵌一个iframe,现在想要在iframe内获取父vue组件内信息,由于本人技术有限,采用的是H5新特性PostMessage来解决跨域问题。
postMessage内涵两个API:
onMessage:消息监听
postMessage:消息发送
举个栗子,比如我要改变iframe内字体变成跟父级一样,直接上代码:
父
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title> </head> <body> <div id="father" class="father" style="width: 100px;height: 100px;border: solid 1px #333;color: blue;" onclick="sentPost()">
<div>father</div>
</div> <iframe src="son.html" id="son"></iframe> <script type="text/javascript">
function sentPost() {
var iframeWin = document.getElementById('son').contentWindow;
iframeWin.postMessage(document.getElementById("father").style.color, "*");
}
window.addEventListener("message",function(event){
console.log(event,event.data);
},false);
</script>
</body>
</html>
以上代码将父级字体的颜色发送到子iframe;
子iframe代码:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<div id="container" style="width: 200px;height: 200px;color: red;">son</div>
<script type="text/javascript">
window.addEventListener("message", function(event){
console.log(event);
var color = event.data;
document.getElementById("container").style.color = color;
},false);
</script>
</body>
</html>
子iframe将监听消息然后渲染字体







