Q5
Which of the following are valid function names? 1. function() 2. €() 3. .function() 4. function()
A.
Only 2
AnswerB.
None of the mentioned
C.
All of the mentioned
D.
3 and 4
Answer: Option A
Solution
Answer: Option A
Solution:
Except a) others are invalid names. According to the specified regular expression ([a-zA-Z_x7f-xff][a-zA-Z0-9_x7f-xff]*), a function name like this one is valid.