日常学习知识点笔记
详见：Javascript
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详见：WebGL
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详见：Unity
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使用选择器加权值的算法这个观点不认同
原文：“网上有很多使用选择器加权值的算法，我一直不喜欢，比如id选择器是100，类选择器10，那是不是说同一个标签使用11个类选择器（110）权重就大于一个id选择器（100）的权值呢”
虽然这种场景会导致计算失误，但是在正常场景下这个方法的确会大大方便我们计算优先级
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