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
找不到能完美处理大文本+大图像的东西，但我最终得到了这个，似乎这是对的，或者几乎是对的，每一次:
iframe.addEventListener("load",function(){
// inlineSize, length, perspectiveOrigin, width
let heightMax = 0;
// this seems to work best with images...
heightMax = Math.max(heightMax,iframe.contentWindow.getComputedStyle(iframe.contentWindow.document.body).perspectiveOrigin.split("px")[0]);
// this seems to work best with text...
heightMax = Math.max(heightMax,iframe.contentWindow.document.body.scrollHeight);
// some large 1920x1080 images always gets a little bit off on firefox =/
const isFirefox = navigator.userAgent.toLowerCase().indexOf('firefox') > -1;
if(isFirefox && heightMax >= 900){
// grrr..
heightMax = heightMax + 100;
}
iframe.style.height = heightMax+"px";
//console.log(heightMax);
});
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.
使用jQuery的最简单方法:
$("iframe")
.attr({"scrolling": "no", "src":"http://www.someotherlink.com/"})
.load(function() {
$(this).css("height", $(this).contents().height() + "px");
});
我相信这样的做法会奏效。
parent.document.getElementById(iFrameID).style.height=framedPage.scrollHeight;
在iframe内容中加载你的body。
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。
我有一个简单的解决方案，需要你确定链接的宽度和高度，请尝试(它适用于大多数浏览器):
<a href='#' onClick=" document.getElementById('myform').src='t2.htm';document.getElementById('myform').width='500px'; document.getElementById('myform').height='400px'; return false">500x400</a>
