this Keyword in JavaScript - JavaScript Tutorial 79

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)
{
{
}
}
var rect1 = new Rectangle(5,5);

var rect2 = new Rectangle(6,6);

Behind the scene code:

function Rectangle(width,height,this)
{
{
}
return this;
}
var rect1 = new Rectangle(5,5,#1);

var rect2 = new Rectangle(6,6,#2);

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

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JavaScript Tutorial 80 - Difference between prototype and _proto__ in JavaScript

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JavaScript Tutorial 78 - How to create Objects using Constructor function in JavaScript

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[cmonbrainy]

Truly an amazing explanation...First time i am seeing a tutorial which has explaines to the core level..great:)

[dheerajmantena]

AWESOME, thanks with "this" video my misconception about "this" as completely gone. You are the best :)

[vaishaliuchekar]

Very nice video.. thank you so much for your dedication and detail explanation ..way of explanation is simply outstanding .

[oamarkanji]

Thank you, this is the best video I have watched on this topic and it has made me understand this concept!

[zunairullah]

new keyword is the keyword that make (this) keyword to work otherwise this keyword always refer to window object if u omit new in constructor this will refer to window and error will occur ur code