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The Complete Guide to Modern JavaScript

Iterables and Looping

Explore how to use ES6 iteration techniques including the for of loop to iterate arrays and the methods to iterate objects with Object.keys and Object.entries. Understand the distinctions between for of and for in loops to effectively manage looping over data structures.

We'll cover the following...

The for of loop

ES6 introduced a new type of loop, the for of loop. Let’s take a look at how it is used.

 

Iterating over an array

Usually, we would iterate using the following method:

Javascript (babel-node)
var fruits = ['apple','banana','orange'];
for (var i = 0; i < fruits.length; i++){
  console.log(fruits[i]);
}
// apple
// banana
// orange

This is a normal loop where at each iteration we increase the value of ...