下面代碼中的輸出結(jié)果為?()
A.null B.undefined C.false D.報(bào)錯(cuò),無法正確運(yùn)行
下面代碼中兩處的輸出結(jié)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(jié)果是?()
A.[1,2,9] B.[1,4,9] C.[NaN,NaN,NaN] D.報(bào)錯(cuò),無法正確運(yùn)行