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

In javascript it is possible to pass a function as an argument to another function just like we pass a normal variable to a function.suppose i have a requirement that i want to call 2 functions one ...

The construction and behavior of functions are discussed in this chapter, including function parameters, arguments, storing functions in variables and passing functions as parameters. You'll learn how ...

‘Higher-order functions’ is a fancy term for functions that take other functions as arguments or that return functions. Very powerful! Last week, I casually dropped the term “higher-order ...

💡Tip: In JavaScript, functions can be stored in variables, passed into other functions as arguments, passed out of functions as return values, and constructed at run-time. The syntax of the function ...

Every now and then I need to have a method support 2 or 3 arguments, providing a default value for one of them if only 2 are specified. My typical solution is to check the number of arguments passed ...