How to call anonymous function in js

In JavaScript, anonymous functions can be called in the following four ways: Immediately call the execution function (IIFE) as a parameter passed to another function (callback function) assigned to a variable as the value of an expression

Calling anonymous functions in JavaScript

In JavaScript, an anonymous function is a function without a name, usually used when A block of code that is executed once. There are several ways to call anonymous functions:

1. Immediately call execution function (IIFE)

Immediately call execution function is a method that uses brackets and parentheses to A method that is wrapped in an anonymous function and executed immediately.

(function() { // 代码块 })();

2. Use anonymous functions as parameters

You can pass anonymous functions as parameters to another function, called a callback function. For example:

function myFunction(callback) { callback(); } myFunction(function() { // 代码块 });

3. Using anonymous functions as variables

You can assign an anonymous function to a variable and then call it like a normal function.

var myFunc = function() { // 代码块 }; myFunc();

4. Using anonymous functions as expressions

You can use an anonymous function as the value of an expression and then call it using parentheses.

var result = (function() { // 代码块 })();

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