多項(xiàng)選擇題html5在IE幾中兼容性有問題:()

A.IE 6
B.IE 7
C.IE 8
D.IE 9


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1.多項(xiàng)選擇題在JavaScript中以下哪個(gè)變量名是非法的()。

A._loves1
B.8loves
C.Loves
D.Love@$s

2.多項(xiàng)選擇題vardata=["A","B","C","D"];data.unshift("X");data.push("Y");執(zhí)行上面的代碼,data的結(jié)果錯(cuò)誤的是()。

A.["A","B","C","D","X","Y"]
B.["Y""A","B","C","D","X"]
C.["X","A","B","C","D","Y"]
D.["X","Y""A","B","C","D"]

4.多項(xiàng)選擇題以下關(guān)于NaN說法正確的是()。

A.NaN是一個(gè)數(shù)
B.NaN是number的特殊類型
C.NaN和任何值都不相等
D.NaN只和自己相等

5.多項(xiàng)選擇題以下操作可以創(chuàng)建數(shù)組的是()。

A.new Array(10)
B.new Array(10,20)
C.[’a’,2]
D.{2,1,3}