Iterating through an array using the Foreach function in ECMAscript5

1 var a = [1,2,3];2 A.foreach (function (Value,index,arr) {3     Arr[index] = value + index;4}) 5 Console.log (a); >>[1, 3, 5]

The first parameter represents a value, the second parameter represents the index, and the third parameter represents the array itself. The 2,3 parameter can be omitted.

1 var a = [1,2,3];2 A.foreach (function (Value,index,arr) {3     A[index] = value + index;4}) 5 Console.log (a); >>[1, 3 , 5]

The third parameter is the same as the direct use of a.

Iterating through an array using the Foreach function in ECMAscript5