When to use anonymous JavaScript functions?

The code while using anonymous functions is more readable when handlers are to be defined inside the calling code. Anonymous functions are declared inline. Normally, inline functions are better since they can access variables in the parent scopes.

It allows for creating a function without any names identifier. It can be used as an argument to other functions. You can call them using a variable name.

This is how JavaScript anonymous functions can be used −

var func = function() {
   alert(‘This is anonymous');
}
func();

Here’s an example −

//anonymous function
var a = function() {
   return 5;
}

Vrundesha Joshi

Published on 23-Feb-2018 10:52:23

• Related Questions & Answers
• JavaScript closures vs. anonymous functions
• JavaScript Encapsulation using Anonymous Functions
• Anonymous Wrapper Functions in JavaScript
• What is a typical use case for JavaScript anonymous functions?
• Does use of anonymous functions affect performance?
• PHP Anonymous functions
• When you should not use JavaScript Arrow Functions?
• How to pass arguments to anonymous functions in JavaScript?
• What are Self-Invoking Anonymous Functions in JavaScript?
• What is the difference between anonymous and inline functions in JavaScript?
• The Anonymous Functions in Python
• What is the purpose of wrapping whole JavaScript files in anonymous functions?
• How to use named arguments in JavaScript functions?
• When should I use an Inline script and when to use external JavaScript file?
• When and how to use document.write() in javascript?