IE CSS Bug系列:不正确的浮动伸缩Bug
影响的IE版本
这个 bug 影响 IE7、IE6
表现
跟随在其他浮动元素之后的浮动元素,设置clear属性时不能正确伸缩
教程编写时间
2009.8.18 21:17:12
描述
这是我在 Gérard Talbot 收集整理的 IE7 Bug 页面发现的bug之一(我大部分案例都是从那来的)。这个bug影响IE7跟IE6,表现就是设置了 clear
属性的浮动元素并不能正确地伸缩。我们来看一下:
演示
示例在这个独立页面
HTML代码:
<div> Here is a <div> having float: left and clear: left. As expected, it takes, it occupies as much width it requires from the body's content area. </div> <div> This is the same type of <div>: a left-floated <div> with clear: left. This <div> should use, should take, should occupy the whole content area of the body node (expected results). However, in Internet Explorer 7, this left-floated <div> with clear: left only takes, only occupies a very narrow chunk of the body's content area (actual results). More text filling. More text filling. More text filling. More text filling. More text filling. </div> <div> Here, a third <div> having float: left and clear: left. Change your browser window viewport's width. </div> <ul> <li> Here is a <div> having float: left and clear: left. As expected, it takes, it occupies as much width it requires from the body's content area. </li> <li> This is the same type of <div>: a left-floated <div> with clear: left. This <div> should use, should take, should occupy the whole content area of the body node (expected results). However, in Internet Explorer 7, this left-floated <div> with clear: left only takes, only occupies a very narrow chunk of the body's content area (actual results). More text filling. More text filling. More text filling. More text filling. More text filling. </li> <li> Here, a third <div> having float: left and clear: left. Change your browser window viewport's width. </li> </ul>
CSS 代码:
div, li { background-color: #ddd; border: 1px solid green; clear: left; color: black; float: left; }
在IE6跟IE7中可以发现第二、第三个<li>及<div>不能正确地伸缩。它们被“截”短了,过早伸缩了。据Sjaak Prieste所说(Gérard Talbot在这个bug中称赞了他),原因是这样的,IE首先把该浮动元素与上一个浮动元素渲染在同一行中,然后发现’clear’属性,清除浮动将其移到下一行,但没有重新排布文本。
我的演示中既有<div>也有<li>的原因是,这两种情况的处理方法有点区别。在“解决方案”中会有更多说明。
解决方案
以下是上述bug的解决方法(以类型排序)
解决方法(对清除进行标记)
该方法的时间
Tue Aug 18 21:17:26 2009
可修复的的版本
所有受该bug影响的版本
描述
我找不到一个像样的办法,如果谁有比较好的、相对简洁的办法,请评论给我!下面是我的方法:
修复bug的演示在这个独立页面
HTML Code:
<div> Here is a <div> having float: left and clear: left. As expected, it takes, it occupies as much width it requires from the body's content area. </div> <span class="ie_fix"></span> <div> This is the same type of <div>: a left-floated <div> with clear: left. This <div> should use, should take, should occupy the whole content area of the body node (expected results). However, in Internet Explorer 7, this left-floated <div> with clear: left only takes, only occupies a very narrow chunk of the body's content area (actual results). More text filling. More text filling. More text filling. More text filling. More text filling. </div> <span class="ie_fix"></span> <div> Here, a third <div> having float: left and clear: left. Change your browser window viewport's width. </div> <ul> <li> <div>Here is a <div> having float: left and clear: left. As expected, it takes, it occupies as much width it requires from the body's content area.</div> </li> <li> <div>This is the same type of <div>: a left-floated <div> with clear: left. This <div> should use, should take, should occupy the whole content area of the body node (expected results). However, in Internet Explorer 7, this left-floated <div> with clear: left only takes, only occupies a very narrow chunk of the body's content area (actual results). More text filling. More text filling. More text filling. More text filling. More text filling.</div> </li> <li> <div>Here, a third <div> having float: left and clear: left. Change your browser window viewport's width.</div> </li> </ul>
CSS Code:
div { background-color: #ddd; border: 1px solid green; clear: left; color: black; float: left; } .ie_fix { display: inline-block; } .ie_fix { display: block; }
看下这边我做的事。在示例中的div部分,我在各div之间插入一个额外的<span>元素,并且通过 {display: inline-block;}给它一个”布局”(layout),然后设置其display属性为block。
因为<li>元素之间插入<span>元素不大合适,在示例的<ul>部分我将每个<li>的内容用一个<div>包起来,然后将那个div设为浮动(注意这边将 li 的浮动删掉了)。
在正常的浏览器里,最初的示例中浮动元素的伸缩可以完全适应其包围元素的变化,而我们的修复版本并不能做到。因而这个解决方法并不完美,不过也许可以帮助到你。