关键字不可以作为变量名或者函数名 复制代码 代码如下: break case catch continue default delete do else finally for function if in instanceof new return switch this throw try typeof var void while with
保留字是为以后关键字而准备的 也不可以用来变量或者函数名。 复制代码 代码如下: abstract boolean byte char class const debugger double enum export extends final float goto implements import int interface long native package private protected public short static super synchronized throws transient volatile