關(guān)鍵字： 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：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

賦值數(shù)字了之后，你再調(diào)用這個(gè)變量時(shí)，就相當(dāng)于調(diào)用這個(gè)數(shù)字

那是給你定義的變量賦值

var