张安庆 2021-02-11 11:38 开发者_运维技巧 关于这个问题，建材市场或五金店应该有的卖，石笔的全称是滑石笔可以看看
It seems that in Javascript, if you have a reference to some DOM element, and then modify the DOM by adding additional elements to document.body, your DOM reference becomes invalidated.
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