题目内容

Which of the following jQuery method is used to hide the selected elements?

A. The hidden() method
B. The hide() method
C.The visible(false) method
D. The display(none) method

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What does the syntax $("p.para") will select?

A. The first paragraph element with class = "para"
B. The first paragraph element with id = "para"
C. The first paragraph element with name = "para"
D. All paragraph elements with class = "para"

S=“Beijing&Nanjing” T=“jing”, INDEX(S,T)=( )。

A. 2
B. 3
C. 4
D. 5

以下叙述中正确的是( )

A. 串是一种特殊的线性表
B. 串的长度必须大于零
C. 串中元素只能是字母
D. 空串就是空格串

长度为零的串是( )。

A. 空格串
B. 不存在的
C. 空串
D. 只含一个空格的串

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