Consider the following code snippet :
  var a = [];
a.unshift(1);

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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



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2) The pop() method of the array does which of the following task ?

3) Consider the code snippet given below

var count = [1,,3];

What is the observation made?

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 ?

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

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