this Keyword in JavaScript - JavaScript Tutorial 79

Published: 21 March 2018
on channel: ChidresTechTutorials

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Notes for You:: this Keyword in JavaScript - JavaScript Tutorial 79
is a special keyword present inside every constructor function & methods.
is a reference variable, which always points to the object with which we are currently working.
is used to access members (i.e. attributes & behaviors) of the currently working object.

Actual Code:

function Rectangle(width,height)
{
this.width = width;
this.height = height;
this.getArea=function()
{
return this.width * this.height;
}
}
var rect1 = new Rectangle(5,5);
document.write(rect1.getArea());
document.write("<br/>");

var rect2 = new Rectangle(6,6);
document.write(rect2.getArea());
document.write("<br/>");

Behind the scene code:

function Rectangle(width,height,this)
{
this.width = width;
this.height = height;
this.getArea=function(this)
{
return this.width * this.height;
}
return this;
}
var rect1 = new Rectangle(5,5,#1);
document.write(rect1.getArea(rect1));
document.write("<br/>");

var rect2 = new Rectangle(6,6,#2);
document.write(rect2.getArea(rect2));
document.write("<br/>");

Notes:
replace < with less-than symbol.
replace > with greater-than symbol.

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