关键字和保留字
- 保留的关键字不能作为标识符
ES6的所有关键字
- break
- case
- catch
- class
- const
- continue
- debugger
- default
- delete
- do
- else
- export
- extends
- finally
- for
- function
- if
- import
- in
- instantceof
- new
- return
- super
- switch
- this
- throw
- try
- typeof
- var
- void
- while
- with
- yield
ES6为未来保留的词汇
- 始终保留:enum
- 严格模式下保留:implements, interface, let , package, protected, private, public, static
- 模块代码中保留:await
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