JS-Function

 <Beginner JS><Function><Variable><Loop-If><OOP>

Syntax of a function

function name(){}

Exemple

function showAdress)_{

document.write("Hello");

}

Function calling

showAdress();

Function and local variables

Variable declared in the body of a function

...{var custAdress}...

Argument - > passing an argument

This means: providing an argument to a function

function circleArea(radius){

var areas;

area=radius*radius*3.14;

document.write("area is: ",area);

}

circleArea(20.75);

function with more than one argument

function rectangleArea(length,height){

var area;

area=length*height*3.14;

document.write("area: ",area);

}

var length,height;

length=52.05;

height=46.55;

rectangleArea(length,height);

Argument with different types

function rectangleArea(length,height,shape){

....}

length=2;

height=4;

shape="rectangle";

rectangleArea(length,height,shape);

Returning a value

....

return area; }

producing a value and making it available to other functions