anonymous fuction javascript code example

Example 1: js anonymous functions

// ES5
var multiplyES5 = function(x, y) {
  return x * y;
};

// ES6
const multiplyES6 = (x, y) => { return x * y };

Example 2: anonymous functions javascript

// Regular function, called explicitly by name .aka “named function”
function multiply(a, b){
	var result = a * b; 
	console.log(result);
} 
multiply(5, 3);

// Anonymous function stored in variable. 
// Invoked by calling the variable as a function
// Anonymous functions don't have a name, 
// so the parentheses appears right after “function” keyword.
var divided = function() {
	var result = 15 / 3;
	console.log("15 divided by 4 is "  + result);
}
divided();

// Immediately Invoked Function Expression.
// Immediately invoked function expressions are anonymous functions 
// with another parentheses pair at the end to trigger them, 
// all wrapped inside parentheses.
// Runs as soon as the browser finds it: 
(function() {
	var result = 20 / 10;
	console.log("20 divided by 10 is " + result);
}())