Learn how to create a callback function in JavaScript and use it for various purposes, such as asynchronous programming, modularity, flexibility, and custom events.

Functions are blocks of code that can be defined and invoked to perform a specific task. To define a function in JavaScript, we can use the function keyword, followed by the function name, parentheses ...

Higher order functions are functions that manipulate other functions. For example, a function can take other functions as arguments and/or produce a function as its return value. Such fancy functional ...

Regular Functions Regular functions are the traditional way of defining functions in JavaScript, and they are still widely used today. They are written using the function keyword and can have named or ...

JavaScript tutorial: Add speech recognition to your web app. Jun 6, 2019 5 mins. ... JavaScript tutorial: Higher-order functions. Apr 18, 2019 4 mins. how-to. JavaScript memoization: ...

“Javascript has no block scope (!) but one can use self-executing functions instead (as Javascript has function scope.)” What Ben is referring to is that JavaScript doesn’t scope your variables to if ...