The method or operator used to identify the array is

The method or operator used to identify the array is

isarrayType()

==

===

typeof

Answer : D

Sponsored Ad

अगर आप कम्पटीशन एग्जाम की ऑनलाइन तैयारी कर रहे है तो यहाँ से आप फ्री में Online Test

1) The method or operator used to identify the array is

2) 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

3) The reduce and reduceRight methods follow a common operation called

filter and fold

inject and fold

finger and fold

fold

4) 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 ?

Returns [1,2,3].

Returns [4,5].

Returns [1,2,3,4].

Returns [1,2,3,4,5].

5) Consider the following code snippet

  var a1 = [,,,];
  var a2 = new Array(3);
  0 in a1
  0 in a2

The result would be

true false

false true

true true

false true