typescript foreach this code example

Example 1: javascript foreach

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

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

Example 2: perform a function on each element of array javascript

var new_array = old_array.map(function(e) { 
  e.data = e.data.split(','); 
  return e;
});