在 JavaScript 中使用"let"和"var"来声明变量有什么区别？
ECMAScript 6 introduced the let statement. I've heard it described as a "local" variable, but I'm still not quite sure how it behaves differently than the var keyword.
What are the differences? When should let be used over var?
转载于:https://stackoverflow.com/questions/762011/whats-the-difference-between-using-let-and-var-to-declare-a-variable-in-jav
Lotus＠
2009/04/17 20:09- var
- scope
- let
- javascript
- ecmascript
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