![](https://static.youtibao.com/asksite/comm/h5/images/m_q_title.png)
[主观题]
分析下面的JavaScript代码段,输出结果是()var mystring="I am a student";a=mystring.charAt(9);document.write(a);
A.I am a st
B.U
C.Udent
D.T
查看答案
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.I am a st
B.U
C.Udent
D.T
A.15
B.16
C.15.5
D.15.4
B.HelloWorld
C.HW
D.helloworld
B.Ianast
C.u
D.t
A.ABC6789
B.ABC67
C.12345ABC6
D.ABC456789
A.12
B.36
C.54
D.66
A.**3 ##4 **5
B.##3 **4 ##5
C.##3 **4##5
D.** 3##4 **5