In this JavaScript walkthrough, we take a look at What are Concise Body Arrow Functions in JavaScript ES6 Syntax, Learn Concise Body on Codecademy. In the previous lesson, we looked at arrow functions and found out that they are an ES6 feature that allows us to cut our code by getting rid of the function keyword. In this lesson, we learn how to cut our code down even more by using single-line block code. We learn that we are able to get rid of our curly braces as well as our return keyword when we use a single line block of code. We also learn that if we have only one parameter, then we do not have to add parentheses to our parameter, but if there are 0 or 2 or more parameters then our function does require parentheses. Understanding concise body arrow functions in JavaScript is important in your programming journey and will help when reading and trying to dissect code. Learning to refactor your code to be more concise is also very helpful and displays to others your superior programming style. Make sure to understand concise body arrow functions in JavaScript before moving on to the next JavaScript lessons!