array elements looping over and over in javascript code example

Example 1: loop over an array

let fruits = ['Apple', 'Banana'];

fruits.forEach(function(item, index, array) {
  console.log(item, index);
});
// Apple 0
// Banana 1

Example 2: javascript best way to loop through array

var len = arr.length;
while (len--) {
    // blah blah
}