create anonyme function code example
Example 1: anonymous function javascript
// There are several definitions
// Non-anonymous, you name it
function hello() { /* code */ }
// Call as usual
hello()
// The myriad of anonymous functions
// This is actually anonymous
// It is simply stored in a variable
var hello = function() { /* code */ }
// It is called the same way
hello()
// You will usually find them as callbacks
setTimeout(function(){ /* code */ }, 1000)
// jQuery
$('.some-element').each(function(index){ /* code */ })
// Or a self firing-closue
(function(){ /* code */ })()
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);
}())