JavaScript – Some ways to build functions in JavaScript

Posted on December 28, 2015 by

Vitosh Posted in JavaScript, Just Tricks

There are plenty of ways to make functions in JS. However, the nicest ones are to assign the function to a variable and to call the variable. Why this is the nicest one? Well, probably because I cannot make something similar with VBA and I would love to give a parameter to a variable there. It would look simply amazing 🙂

This is just a small code, with 4 ways of defining functions in JavaScript plus some usage of the Apply and Call in JavaScript.

<!DOCTYPE HTML>
<html>
    <head>  
    </head>
	<body>
		<script type="text/javascript">
		var square_plus_five = function square_plus_five1 (n){
			return n*n+5;
		}
		console.log(square_plus_five(5));

		var square_plus_ten = function(n){
			return n*n+10;
		}
		console.log(square_plus_ten(10));

		(function(){
			console.log("Here comes the boom!");
		})();

		var square_plus_hundred = new Function("n","return n*n-100;");
		console.log(square_plus_hundred(5));

		var numbers = [1,23,5,6];
		console.log(Math.max.apply({},numbers));
		console.log(Math.min.apply(null,numbers));
		console.log(Math.min.call(null,4,5,6,2));
		console.log(Math.max.call(null,4,5,6,2));

		</script>
    </body>
</html>

<!DOCTYPE HTML>

<html>

<head>

</head>

<body>

var square_plus_five = function square_plus_five1 (n){

return n*n+5;

}

console.log(square_plus_five(5));

var square_plus_ten = function(n){

return n*n+10;

}

console.log(square_plus_ten(10));

(function(){

console.log("Here comes the boom!");

})();

var square_plus_hundred = new Function("n","return n*n-100;");

console.log(square_plus_hundred(5));

var numbers = [1,23,5,6];

console.log(Math.max.apply({},numbers));

console.log(Math.min.apply(null,numbers));

console.log(Math.min.call(null,4,5,6,2));

console.log(Math.max.call(null,4,5,6,2));

</script>

</body>

</html>

Not a lot of code, but Christmas is coming 🙂 🙂 And you may find it in GitHub here.

Tagged with: functions in javascript

JavaScript – Some ways to build functions in JavaScript

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