Frameworks make the process of working with JavaScript, easy and fast. JavaScript frameworks consist of a group of libraries that contain JavaScript code. Unlike other websites, JSchallenger enabled me to thoroughly learn new Javascript concepts. And it gave me the motivation to solve js problems. This feature helps to stay motivated and makes it easy for you to pick up where you left off. This challenge is particularly helpful if you’re planning to become a Data Scientist. Manipulating data is a significant part of the role, and building the foundations now will help you later down the road when you’re working with large databases. You could also try using arrays of different lengths. If you’re feeling comfortable with this, try the slightly more challenging bonus challenge below. You can create your own array of numbers but consider trying this problem with a few different sets to verify your solution. Have one array with negative and positive numbers and another with integers and decimals. Each of these challenges is suitable for beginners, but you may find that having a base-level knowledge of JavaScript is helpful. Or, if you have a little bit of experience, you might benefit from refreshing your knowledge with our introductory course on JavaScript. Since the words aren’t case-sensitive, we can make word lowercase. Then we can check if wordMap already has a key with the value of word.toLowerCase(). If it already has a value — say, 1 — this means that we increment the value at that key to 2 to show that we have two instances of word. If you loved this write-up and you would like to receive a lot more details pertaining to code challenge javascript kindly pay a visit to the web site. toLowerCase(). Even though last time we used the accumulator to add up each numbers from the array, we can slightly change how this accumulator works. Instead of storing the data into it for each iteration, we’re going to use it to store only one item, and that’s the previous item in the array.