本课内容目前为英文。
Who can see your variables?
Every variable lives somewhere, and only some code can see it. Knowing where variables live unlocks closures, one of JavaScript's most powerful ideas, and modules, which keep big projects tidy.
本课内容目前为英文。
Every variable lives somewhere, and only some code can see it. Knowing where variables live unlocks closures, one of JavaScript's most powerful ideas, and modules, which keep big projects tidy.