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变量提升和函数提升

2022-06-09 03:56:00 【m0_49471668】

var声明的变量存在变量提升、let与const声明的变量不存在提升，但是存在暂时性死区的问题。

变量提升：在js编译阶段将该被声明的变量提升至代码的最前面。同时声明优先级来说，函数提升优先级大于变量提升，变量提升会覆盖掉函数提升

暂时性死区：暂时性死区是在变量未定义之前，就访问该变量所造成的的问题

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本文为[m0_49471668]所创，转载请带上原文链接，感谢
https://blog.csdn.net/m0_49471668/article/details/125188856

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