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- //map operator..
- let arr1 = [1,2,3,4,5];
- arr1.forEach((val, index,arr)=> val *3 );
- arr1
- let arr2= arr1.map((val,index,arr) => val * 2);
- arr2
- let arr3 = arr2.filter((val,index,arr)=> val >=6);
- arr3;
- arr1.reduce((acc,curVal)=> acc + curVal);
- let arr = [1, 2, 3, 4, 5];
- arr.forEach((num, index) => {
- return arr[index] = num * 2;
- });
- arr
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