调整iframe的宽度和高度以适应其中的内容

我需要一个自动调整iframe的宽度和高度的解决方案，以勉强适应其内容。关键是宽度和高度可以在iframe加载后改变。我想我需要一个事件动作来处理iframe中包含的主体尺寸的变化。

当前回答

简单性:

var iframe = $("#myframe");
$(iframe.get(0).contentWindow).on("resize", function(){
    iframe.width(iframe.get(0).contentWindow.document.body.scrollWidth);
    iframe.height(iframe.get(0).contentWindow.document.body.scrollHeight);
});

2016-07-21 08:15:47

其他回答

对于angularjs的directive属性:

G.directive ( 'previewIframe', function () {
return {
    restrict : 'A',
    replace : true,
    scope : true,
    link : function ( scope, elem, attrs ) {
        elem.on ( 'load', function ( e ) {
            var currentH = this.contentWindow.document.body.scrollHeight;
            this.style.height = eval( currentH ) + ( (25 / 100)* eval( currentH ) ) + 'px';
        } );
    }
};
} );

注意百分比，我插入它，这样你可以对抗缩放通常做的iframe，文本，广告等，简单地放0如果没有缩放是实现

2017-12-23 18:04:39

我在这里读了很多答案，但几乎每个人都给出了一些交叉起源的框架块。

错误示例:

未捕获的DOMException:阻止了一个原点为“null”的帧访问跨原点框架。

在相关线程中的答案也是一样的:

使iframe自动调整高度根据内容而不使用滚动条?

我不想使用第三方库，如iFrame Resizer或类似的库。

来自@bboydflo的答案很接近，但我缺少一个完整的示例。https://stackoverflow.com/a/52204841/3850405

我使用width="100%"的iframe，但代码可以修改为宽度以及工作。

这是我如何解决设置自定义高度的iframe:

iframe嵌入:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8" />
    <meta name="description"
          content="Web site" />
    <title>Test with embedded iframe</title>
</head>
<body>
    <noscript>You need to enable JavaScript to run this app.</noscript>
    <div id="root"></div>
    <iframe id="ifrm" src="https://localhost:44335/package/details?key=123" width="100%"></iframe>
    <script type="text/javascript">
        window.addEventListener('message', receiveMessage, false);

        function receiveMessage(evt) {
            console.log("Got message: " + JSON.stringify(evt.data) + " from origin: " + evt.origin);
            // Do we trust the sender of this message?
            if (evt.origin !== "https://localhost:44335") {
                return;
            }

            if (evt.data.type === "frame-resized") {
                document.getElementById("ifrm").style.height = evt.data.value + "px";
            }
        }
    </script>
</body>
</html>

iframe源代码，示例来自创建React应用程序，但只使用HTML和JS。

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8" />
    <meta name="description"
          content="Web site created using create-react-app" />
    <title>React App</title>
</head>
<body>
    <noscript>You need to enable JavaScript to run this app.</noscript>
    <div id="root"></div>
    <script type="text/javascript">
        //Don't run unless in an iframe
        if (self !== top) {
            var rootHeight;
            setInterval(function () {
                var rootElement = document.getElementById("root");
                if (rootElement) {
                    var currentRootHeight = rootElement.offsetHeight;
                    //Only send values if height has changed since last time
                    if (rootHeight !== currentRootHeight) {
                        //postMessage to set iframe height
                        window.parent.postMessage({ "type": "frame-resized", "value": currentRootHeight }, '*');
                        rootHeight = currentRootHeight;
                    }
                }
            }
                , 1000);
        }
    </script>
</body>
</html>

带有setInterval的代码当然可以修改，但它与动态内容一起工作得非常好。setInterval仅在内容嵌入iframe时激活，postMessage仅在高度改变时发送消息。

你可以在这里阅读更多关于Window.postMessage()的内容，但描述非常适合我们想要实现的目标:

The window.postMessage() method safely enables cross-origin communication between Window objects; e.g., between a page and a pop-up that it spawned, or between a page and an iframe embedded within it. Normally, scripts on different pages are allowed to access each other if and only if the pages they originate from share the same protocol, port number, and host (also known as the "same-origin policy"). window.postMessage() provides a controlled mechanism to securely circumvent this restriction (if used properly).

https://developer.mozilla.org/en-US/docs/Web/API/Window/postMessage

如果你想为iframe设置100%的宽度和高度，我会这样做:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8" />
    <meta name="description"
          content="Web site" />
    <style>
        body {
            margin: 0; /* Reset default margin */
        }

        iframe {
            display: block; /* iframes are inline by default */
            background: #000;
            border: none; /* Reset default border */
            height: 100vh; /* Viewport-relative units */
            width: 100vw;
        }
    </style>
    <title>Test with embedded iframe</title>
</head>
<body>
    <iframe src="https://localhost:44335/package/details?key=123"></iframe>
</body>
</html>

来源:

https://stackoverflow.com/a/27853830/3850405

2021-09-17 15:12:33

Javascript被放置在头文件:

function resizeIframe(obj) {
        obj.style.height = obj.contentWindow.document.body.scrollHeight + 'px';
      }

下面是iframe html代码:

<iframe class="spec_iframe" seamless="seamless" frameborder="0" scrolling="no" id="iframe" onload="javascript:resizeIframe(this);" src="somepage.php" style="height: 1726px;"></iframe>

Css样式表

.spec_iframe {
        width: 100%;
        overflow: hidden;
    }

2016-02-27 05:55:23

function resizeIFrameToFitContent(frame) {
if (frame == null) {
    return true;
}

var docEl = null;
var isFirefox = navigator.userAgent.search("Firefox") >= 0;

if (isFirefox && frame.contentDocument != null) {
    docEl = frame.contentDocument.documentElement;
} else if (frame.contentWindow != null) {
    docEl = frame.contentWindow.document.body;
}

if (docEl == null) {
    return;
}

var maxWidth = docEl.scrollWidth;
var maxHeight = (isFirefox ? (docEl.offsetHeight + 15) : (docEl.scrollHeight + 45));

frame.width = maxWidth;
frame.height = maxHeight;
frame.style.width = frame.width + "px";
frame.style.height = frame.height + "px";
if (maxHeight > 20) {
    frame.height = maxHeight;
    frame.style.height = frame.height + "px";
} else {
    frame.style.height = "100%";
}

if (maxWidth > 0) {
    frame.width = maxWidth;
    frame.style.width = frame.width + "px";
} else {
    frame.style.width = "100%";
}
}

iFram风格：

.myIFrameStyle {
   float: left;
   clear: both;
   width: 100%;
   height: 200px;
   padding: 5px;
   margin: 0px;
   border: 1px solid gray;
   overflow: hidden;
}

iframe的日子:

<iframe id="myIframe" src="" class="myIFrameStyle"> </iframe>

脚本标签:

<script type="text/javascript">
   $(document).ready(function () {
      $('myIFrame').load(function () {
         resizeIFrameToFitContent(this);
      });
    });
</script>

2020-07-01 08:19:50

这是我怎么做的(在FF/Chrome测试):

<script type="text/javascript" src="http://code.jquery.com/jquery-1.9.1.min.js"></script>
<script type="text/javascript">
function autoResize(iframe) {
    $(iframe).height($(iframe).contents().find('html').height());
}
</script>

<iframe src="page.html" width="100%" height="100" marginheight="0" frameborder="0" onload="autoResize(this);"></iframe>

2013-05-14 10:27:59

调整iframe的宽度和高度以适应其中的内容

推荐文章

最新文章

标签