.class > ul >li:first-child:before 能兼容 ie8 吗？ - V2EX
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Tianpu
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.class > ul >li:first-child:before 能兼容 ie8 吗？

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  •   Tianpu Nov 25, 2015 5166 views
    This topic created in 3824 days ago, the information mentioned may be changed or developed.
    主要是 first-child:before 这俩连起来写， chrome+ie10 都可以，其它浏览器兼容性有问题吗？
  • before
  • IE10
  • IE8
  • 兼容性
    5 replies    2015-11-25 11:26:35 +08:00
    Tianpu
        1
    Tianpu  
    OP
       Nov 25, 2015
    好像很没效率的样子 http://csswizardry.com/2011/09/writing-efficient-css-selectors/

    还是全部分配个 class 属性好了
    wanghani1989
        2
    wanghani1989  
       Nov 25, 2015
    貌似 :before :after 在 ie8 下有问题
    XianZaiZhuCe
        3
    XianZaiZhuCe  
       No 25, 2015 via Android
    直接试一下呗
    otakustay
        4
    otakustay  
       Nov 25, 2015
    @Tianpu 在 CSS Selector 上玩效率在大部分场景下是件很蠢萌的事情，很少有页面能在这个环节出现性能瓶颈
    Tianpu
        5
    Tianpu  
    OP
       Nov 25, 2015
    @wanghani1989 before after 倒影响不大


    @XianZaiZhuCe 没有 IE8


    @otakustay 有 500 行 css 了 估计最终有 1000 行 元素倒是简单

    最后我测试下两种方式渲染速度吧 影响超过 100ms 我就用 class 替代
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