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Which of the following are valid function names? 1. function() 2. () 3. .function() 4. $function()
- AOnly 2
- BNone of the mentioned
- CAll of the mentioned
- D3 and 4
Correct answer: A
Discussion 1
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CCommunity
Only 2
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.
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.