Learning JavaScript Data Structures and Algorithms - Third Edition

The keys, values, and valuePairs methods

Now that we have created the most important methods for the Dictionary class, let's create some auxiliary, but very useful methods.

Next, we will create the valuePairs method, which is going to return an array with all ValuePair objects present in the dictionary. The code is as follows:

keyValues() {  return Object.values(this.table);}

The code is very simple—we are evoking the built-in values method from the JavaScript Object class introduced in the ECMAScript 2017 which we learned in Chapter 1, JavaScript – A Quick Overview.

Since the Object.values method might not be available in all browsers yet, we can also use the following code as an alternative:

keyValues() {   const valuePairs = [];  for (const ...