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中高级前端必须要了解的--JS中的内存管理
source link: https://juejin.im/post/5d0706a6f265da1bc23f77a9
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前言 像C语言这样的底层语言一般都有底层的内存管理接口，比如 malloc()和free()用于分配内存和释放内存。 而对于JavaScript来说，会在创建变量（对象，字符串等）时分配内存，并且在不再使用它们时“自动”释放内存，这个自动释放内存的过程称为垃圾
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