下面代碼中兩處的輸出結果分別是?()
A.undefined,["a","b","d"] B.["c"],["a","b","d"] C."c",["a","b","d"] D."d",["a","b"]
下面代碼中的輸出結果是?()
A.[1,2,9] B.[1,4,9] C.[NaN,NaN,NaN] D.報錯,無法正確運行
A.foriind:deld[i] B.d.clear() C.d={} D.deld