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20200918_陈宇_

日志

学习总结:

typeof返回的数据类型:

​ object、undedined、string、number、boolean、function

添加 删除 替换 插入到某个节点的方法:

​ 添加:appendChild();

​ 删除:removeChild();

​ 替换:replaceChild();

​ 插入:insertBefore(插入节点,被插入节点);

如果需要手动写动画,你认为最小时间间隔是多久?

​ 多数显示器默认频率是60Hz,即1秒刷新60次,所以理论上最小间隔为1/60*1000ms = 16.7ms

学习心得:

​ 今天下午的考试真是太难了,人都快被折磨死了,实在是煎熬,希望峰哥下次出题还是多整一两道比较简单一点的题吧,实在是有点怀疑人生了。

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