Instance method : Member Function « Object Oriented « JavaScript Tutorial

<HTML>
<HEAD>
<TITLE>Instance method demo</TITLE>
</HEAD>
   <BODY>
   <H1>
   <SCRIPT>
   function Rectangle(height, width){
      this.height =  height;
      this.width = width;
   }
   function calc_Area () {
      return this.height * this.width;
   }

   function to_String() {
      return this.height + " by " +this.width;
   }
   Rectangle.prototype.calcArea = calc_Area;
   Rectangle.prototype.toString = to_String;

   var theRectangle = new Rectangle (2, 42);
   document.write(theRectangle);
   </SCRIPT>
   </H1>
   </BODY>
</HTML>

25.4.Member Function
	25.4.1.	Defining the object methods outside of the factory functions and then pointing to them
	25.4.2.	Create an Object with member method
	25.4.3.	Add member function
	25.4.4.	Adding method to a class using prototype
	25.4.5.	Custom objects and associative object arrays
	25.4.6.	Instance method
	25.4.7.	Call object member function