The primary purpose of the array map() function is that it

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The primary purpose of the array map() function is that it



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2) 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

3) Consider the code snippet given below

var count = [1,,3];

What is the observation made?

4) Consider the following code snippet :

 if (!a[i]) continue;

What is the observation made ?

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

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