What will happen if reverse() and join() methods are used simultaneously ?
A. Reverses and stores in the same array
B. Reverses and concatenates the elements of the array
C. Reverses
D. All of the mentioned
Answer: Option A
Solution(By Examveda Team)
The reverse() followed by a join() will reverse the respective array and will store the reversed array in the memory.This Question Belongs to Javascript >> Array And Function
Consider the code snippet given below
var count = [1,,3];
A. The omitted value takes “undefined”
B. This results in an error
C. This results in an exception
D. None of the mentioned
A. true false
B. false true
C. true true
D. false true
The pop() method of the array does which of the following task ?
A. decrements the total length by 1
B. increments the total length by 1
C. prints the first element but no effect on the length
D. None of the mentioned
Consider the following code snippet :
if (!a[i]) continue ;
A. Skips the undefined elements
B. Skips the non existent elements
C. Skips the null elements
D. All of the mentioned
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