for foreach code example

Example 1: javascript foreach

var colors = ['red', 'blue', 'green'];

colors.forEach(function(color) {
  console.log(color);
});

Example 2: javascript .foreach

let colors = ['red', 'blue', 'green'];
// idx and sourceArr optional; sourceArr == colors
colors.forEach(function(color, idx, sourceArr) {
	console.log(color, idx, sourceArr)
});
// Output:
// red 0 ['red', 'blue', 'green']
// blue 1 ['red', 'blue', 'green']
// green 2 ['red', 'blue', 'green']

Example 3: for loop vs for each loop

1-
  For Loop:
-It is flexible to iterate array
both ascending and descending order.
  For Each:
-It iterates from initial to end

2-
  For Loop:
-It runs until given condition become false
  For Each: 
-Keeps execution until last element
get executed

3-
  For Loop:
-It use index
  For Each:
-It use iteration

4-
  For Loop:
-Accepts both object collections and non object collections
  For Each:
-Accepts only object collections