如何在外部域中设置iframe内部的样式？ [英] How to style inside an iframe from an external domain?

问题描述

我有一个网站，其中包含来自3个不同域的3个iframe。每个iframe都在一个单独的页面上。将样式表应用于所有3个iframe的最佳方法是什么？

I have a website with 3 iframes embedded from 3 different domains. Each iframe is on a separate page. What is the best way to apply a style sheet to all 3 iframes?

谢谢！

推荐答案

这可以通过某些网站完成，但不是全部由于相同的原始政策。
允许它的是Twitter。这是重要的代码。

This can be done with some sites but not all due to "same origin policy". One that does allow it is Twitter. This is the important code.

    $('#iframe').each(function(i){
        var $head = $(this).contents().find('head');
        if ($head.length){
            $head.append($("<link/>", { 
                rel: "stylesheet", 
                href: "http://url.to.your.css", 
                type: "text/css"
            }));
        }
    });

要在多个页面上使用相同的CSS，您将使用选择器来获取这三个iframe $（'＃iframe1，＃iframe2，＃iframe3'）但请记住，加载速度可能比另一个慢。

To use the same CSS on more than one page you would use a selector that picks up those three iframes $('#iframe1, #iframe2, #iframe3') but bear in mind one may load slower than another.

如果它们位于不同的页面上并不重要，选择器将捕获存在的任何一个。

It doesn't matter if they are on different pages, the selector will catch whichever exists.

在下面的示例中，稍微缩小了默认的twitter标头，setInterval用于继续检查iframe是否已加载，一旦完成就被销毁。

In this following example, which shrinks the default twitter header slightly, setInterval is used to keep checking that the iframe has loaded, and once done it's destroyed.

HTML

<a class="twitter-timeline" style="height:600;" href="#" data-widget-id="your twitter widget id">Tweets</a>

JS

// twitter's own js
    !function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0],p=/^http:/.test(d.location)?'http':'https';if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src=p+"://platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs");

// jquery to insert the css
$(function(){
    var twitterCssCount = 0;
    var twitterCss=setInterval(function(){
        twitterCssCount++;
        if (twitterCssCount>10) clearTimeout(twitterCss);
        $('iframe.twitter-timeline').each(function(i){
            var $head = $(this).contents().find('head');
            if ($head.length){
                $head.append($("<link/>", { 
                    rel: "stylesheet", 
                    href: "//url.to.your.css", 
                    type: "text/css"
                }));
                clearTimeout(twitterCss);
            }
        });
    },1000);
});

CSS文件的内容

.stream{
    height:560px !important; /* because we're removing some of the header */
}
.timeline-header{
    padding:0 0 5px 0;
}
.timeline-header .ic-twitter-badge{
    border:0;
    top:7px;
    right:7px;
}
h1.summary, h2.byline{
    display:none !important;
}
p.list-description{
    padding:5px;
    padding-bottom:0;
    margin:0;
}
.root.customisable-border{
    border-color:#666;
    -webkit-border-radius: 0;
    -moz-border-radius: 0;
    border-radius: 0;
}

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