Js中的閉包和作用域 · 前端押題寶典

[Js中的執行上下文？](%E4%BB%80%E4%B9%88%E6%98%AFJs%E4%B8%AD%E7%9A%84%E6%89%A7%E8%A1%8C%E4%B8%8A%E4%B8%8B%E6%96%87%EF%BC%9F.md) [Js中執行上下文的類型](Js%E4%B8%AD%E6%89%A7%E8%A1%8C%E4%B8%8A%E4%B8%8B%E6%96%87%E7%9A%84%E7%B1%BB%E5%9E%8B.md) [Js中執行上下文棧是什么？](Js%E4%B8%AD%E6%89%A7%E8%A1%8C%E4%B8%8A%E4%B8%8B%E6%96%87%E6%A0%88%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F.md) [Js中執行上下文的三個階段](Js%E4%B8%AD%E6%89%A7%E8%A1%8C%E4%B8%8A%E4%B8%8B%E6%96%87%E7%9A%84%E4%B8%89%E4%B8%AA%E9%98%B6%E6%AE%B5.md) [什么是作用域？什么是自由變量？](%E4%BB%80%E4%B9%88%E6%98%AF%E4%BD%9C%E7%94%A8%E5%9F%9F%EF%BC%9F%E4%BB%80%E4%B9%88%E6%98%AF%E8%87%AA%E7%94%B1%E5%8F%98%E9%87%8F%EF%BC%9F.md) [Js中作用域的常見應用場景](Js%E4%B8%AD%E4%BD%9C%E7%94%A8%E5%9F%9F%E7%9A%84%E5%B8%B8%E8%A7%81%E5%BA%94%E7%94%A8%E5%9C%BA%E6%99%AF.md) [Js中的作用域鏈](%E4%BB%80%E4%B9%88%E6%98%AF%E4%BD%9C%E7%94%A8%E5%9F%9F%E9%93%BE.md) [Js中如何延長作用域鏈？](Js%E4%B8%AD%E5%A6%82%E4%BD%95%E5%BB%B6%E9%95%BF%E4%BD%9C%E7%94%A8%E5%9F%9F%E9%93%BE%EF%BC%9F.md) [什么是閉包？閉包會用在哪兒？](%E4%BB%80%E4%B9%88%E6%98%AF%E9%97%AD%E5%8C%85%EF%BC%9F%E9%97%AD%E5%8C%85%E4%BC%9A%E7%94%A8%E5%9C%A8%E5%93%AA%E5%84%BF%EF%BC%9F.md) [Js中閉包的作用](Js%E4%B8%AD%E9%97%AD%E5%8C%85%E7%9A%84%E4%BD%9C%E7%94%A8.md) [Js中的閉包在項目中的引用場景，以及帶來的問題](Js%E4%B8%AD%E7%9A%84%E9%97%AD%E5%8C%85%E5%9C%A8%E9%A1%B9%E7%9B%AE%E4%B8%AD%E7%9A%84%E5%BC%95%E7%94%A8%E5%9C%BA%E6%99%AF%EF%BC%8C%E4%BB%A5%E5%8F%8A%E5%B8%A6%E6%9D%A5%E7%9A%84%E9%97%AE%E9%A2%98.md) [Js中閉包的使用場景](Js%E4%B8%AD%E9%97%AD%E5%8C%85%E7%9A%84%E4%BD%BF%E7%94%A8%E5%9C%BA%E6%99%AF.md) [Js中閉包的執行過程](Js%E4%B8%AD%E9%97%AD%E5%8C%85%E7%9A%84%E6%89%A7%E8%A1%8C%E8%BF%87%E7%A8%8B.md)