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HomeWeb Front-endHTML Tutorial跨域下iframe自适应高度_html/css_WEB-ITnose

最近在做一个需求,需求大致背景:页面中iframe嵌入另一家公司的列表页

博主的第一反应就是“very easy!”,so,挽起双袖开始敲代码

结果出现问题了,iframe跨域,无法获得内嵌页面的高度,因此出现的上下滚动条,so难看!

于是上网找大神,皇天不负有心人啊,终于找到了,激动之情无以言表....

故事背景交代完毕

/******************************华丽的分割线,哈哈****************************/

大神的例子大致是这样的:

假设www.a.com下的一个页面a.html要包含www.b.com下的一个页面c.html。

我们使用www.a.com下的另一个页面agent.html来做代理,通过它获取iframe页面的高度,并设定iframe元素的高度

a.html中包含iframe:

1 <iframe src="http://www.b.com/c.html" id="Iframe" frameborder="0" scrolling="no" style="border:0px;"></iframe>

在c.html中加入如下代码:

1 <iframe id="c_iframe"  height="0" width="0"  src="http://www.a.com/agent.html" style="display:none" ></iframe>2 <script type="text/javascript">3 (function autoHeight(){4 var b_width = Math.max(document.body.scrollWidth,document.body.clientWidth);5 var b_height = Math.max(document.body.scrollHeight,document.body.clientHeight);6 var c_iframe = document.getElementById("c_iframe");7 c_iframe.src = c_iframe.src + "#" + b_width + "|" + b_height;  // 这里通过hash传递b.htm的宽高8 })();9 </script>

最后,agent.html中放入一段js:

 1 <script type="text/javascript"> 2 var b_iframe = window.parent.parent.document.getElementById("Iframe"); 3 var hash_url = window.location.hash; 4 if(hash_url.indexOf("#")>=0){ 5 var hash_width = hash_url.split("#")[1].split("|")[0]+"px"; 6 var hash_height = hash_url.split("#")[1].split("|")[1]+"px"; 7 b_iframe.style.width = hash_width; 8 b_iframe.style.height = hash_height; 9 }10 </script>

agent.html从URL中获得宽度值和高度值,并设置iframe的高度和宽度(因为agent.html在www.a.com下,所以操作a.html时不受JavaScript的同源限制)

 

文章引用:前端开发博客

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