根据内容调整iframe的大小

我正在开发一个类似igoogle的应用程序。来自其他应用程序(在其他域中)的内容使用iframe显示。

我如何调整iframes的大小以适应iframes的内容的高度?

我试图破译的javascript谷歌使用，但它是模糊的，搜索网络至今一无所获。

更新:请注意，内容是从其他域加载的，因此适用同源策略。

当前回答

使用jQuery:

parent.html

<body>
<script type="text/javascript" src="https://code.jquery.com/jquery-2.1.4.min.js"></script>
<style>
iframe {
    width: 100%;
    border: 1px solid black;
}
</style>
<script>
function foo(w, h) {
    $("iframe").css({width: w, height: h});
    return true;  // for debug purposes
}
</script>
<iframe src="child.html"></iframe>
</body>

child.html

<body>
<script type="text/javascript" src="https://code.jquery.com/jquery-2.1.4.min.js"></script>
<script>
$(function() {
    var w = $("#container").css("width");
    var h = $("#container").css("height");

    var req = parent.foo(w, h);
    console.log(req); // for debug purposes
});
</script>
<style>
body, html {
    margin: 0;
}
#container {
    width: 500px;
    height: 500px;
    background-color: red;
}
</style>
<div id="container"></div>
</body>

2015-09-17 02:36:30

其他回答

This is slightly tricky as you have to know when the iframe page has loaded, which is difficuly when you're not in control of its content. Its possible to add an onload handler to the iframe, but I've tried this in the past and it has vastly different behaviour across browsers (not guess who's the most annoying...). You'd probably have to add a function to the iframe page that performs the resize and inject some script into the content that either listens to load events or resize events, which then calls the previous function. I'm thinking add a function to the page since you want to make sure its secure, but I have no idea how easy it will be to do.

2008-09-30 14:12:16

<html>
<head>
<script>
function frameSize(id){
var frameHeight;

document.getElementById(id).height=0 + "px";
if(document.getElementById){
    newheight=document.getElementById(id).contentWindow.document.body.scrollHeight;    
}

document.getElementById(id).height= (frameHeight) + "px";
}
</script>
</head>

<body>

<iframe id="frame"  src="startframe.html" frameborder="0" marginheight="0" hspace=20     width="100%" 

onload="javascript:frameSize('frame');">

<p>This will work, but you need to host it on an http server, you can do it locally.    </p>
</body>
</html>

2013-08-19 21:55:24

这个答案只适用于使用Bootstrap的网站。Bootstrap的响应式嵌入特性完成了这项工作。它是基于内容的宽度(而不是高度)。

<!-- 16:9 aspect ratio -->
<div class="embed-responsive embed-responsive-16by9">
  <iframe class="embed-responsive-item" src="http://www.youtube.com/embed/WsFWhL4Y84Y"></iframe>
</div>

jsfiddle: http://jsfiddle.net/00qggsjj/2/

http://getbootstrap.com/components/#responsive-embed

2015-02-03 03:38:41

可能有点晚了，因为所有其他的答案都是老的:-)但是…这是我的解决方案。在实际FF, Chrome和Safari 5.0测试。

css:

iframe {border:0; overflow:hidden;}

javascript:

$(document).ready(function(){
    $("iframe").load( function () {
        var c = (this.contentWindow || this.contentDocument);
        if (c.document) d = c.document;
        var ih = $(d).outerHeight();
        var iw = $(d).outerWidth();
        $(this).css({
            height: ih,
            width: iw
        });
    });
});

希望这对大家有所帮助。

2013-12-25 23:55:41

iGoogle小工具必须主动实现调整大小，所以我猜在跨域模型中，如果没有远程内容以某种方式参与，你就无法做到这一点。如果您的内容可以使用典型的跨域通信技术将具有新大小的消息发送到容器页面，那么其余部分就很简单了。

2008-10-30 14:22:23

根据内容调整iframe的大小

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