The every() and some() array helpers are somewhat similar so I will discuss them both in this post. Both of these array helpers return a boolean result. The purpose of the every() array helper is to execute a function for every array element and test if it meets…
The reduce array helper is probably the most difficult of the array helpers to explain and understand. The purpose of the reduce() array helper is to execute a function for every array element and reduce the entire array to a single value. A Practical Example Suppose we have…
The purpose of the find() array helper is to execute a function for every array element and return a the first array occurrence which matches your specified condition. A Practical Example Suppose we have an array of products and we want to find the first product with a…
The purpose of the filter() array helper is to execute a function for every array element and return a new array containing only those elements that match a condition. A Practical Example Suppose we have an array of products and we want to create a new array of…
The purpose of the map() array helper is to execute a function for every array element and return a new array. The key to remember with this method is that a new array will be returned (you are not changing the original array). A Practical Example Suppose we…
Looping or iterating through an array is a very common task you often need to do in javascript. ES6 javascript provides a handy array helper function for this…. the forEach. First, let’s look at how we would do this in older ES5 javascript. Javascript forEach Helper Now iterating…