What will happen if reverse() and join() methods are used simultaneously ?
Reverses and stores in the same array
Reverses and concatenates the elements of the array
Reverses
All of the mentioned
Answer : A
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1) Consider the following code snippet : var a = [];
a.unshift(1);
a.unshift(22);
a.shift();
a.unshift(3,[4,5]);
a.shift();
a.shift();
a.shift();
The final output for the shift() is
2) Consider the following code snippet :
var a = [1,2,3,4,5];
a.slice(0,3);
What is the possible output for the above code snippet ?
3) The pop() method of the array does which of the following task ?
decrements the total length by 1
increments the total length by 1
prints the first element but no effect on the length
None of the mentioned
View Answer
4) The method or operator used to identify the array is
5) What will happen if reverse() and join() methods are used simultaneously ?
Reverses and stores in the same array
Reverses and concatenates the elements of the array
Reverses
All of the mentioned
View Answer
