[css] 第317天 为什么说css中能用子代选择器的时候不要用后代选择器？ #1968

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[css] 第317天 为什么说css中能用子代选择器的时候不要用后代选择器？#1968

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haizhilin2013

opened on Feb 26, 2020

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第317天 为什么说css中能用子代选择器的时候不要用后代选择器？

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haizhilin2013

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csscsscss

on Feb 26, 2020

longhui520 commented on Feb 27, 2020

longhui520

on Feb 27, 2020

• 选择从右到左依次解析匹配，所以后代选择器会去找它的所有父级，
  而子代选择器只会选择直接的父级；减少匹配次数，提高效率

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