Javascript functions/classes

[VenusCrystal]

HI,

I am new to javascript.. I have been given javascript code to understand as my assignment where i am working and it goes something like this :

PPL.getMarkup = function(a,b,c)
{
// definition goes here
}

I want the explaination for this line as to what PPL, getMarkup could be. I am confused as to PPL is a class or object or function.
Also, what are the different methods of defining class and functions in javascript?

Any help would be appreciated.
Thanks in advance,
VenusCrystal

[stbuchok]

If you don't know what the above is and it is part of your job to understand it, I would suggest reading "JavaScript, The Good Parts" by Douglas Crockford.

http://www.amazon.ca/JavaScript-Good-Parts-Douglas-Crockford/dp/0596517742/ref=sr_1_1?ie=UTF8&qid=1331554257&sr=8-1

And when you are done that (it's a short book), I would read "JavaScript, The Definitive Guide"

http://www.amazon.ca/gp/product/0596805527/ref=s9_simh_gw_p14_d0_g14_i3?pf_rd_m=A3DWYIK6Y9EEQB&pf_rd_s=center-2&pf_rd_r=0RDD0152H2PPFSC0MHX6&pf_rd_t=101&pf_rd_p=463383511&pf_rd_i=915398

PPL is more than likely an object with a function called getMarkup.

There are quite a few ways of writing this. One is as follows:

var PPL = {};

PPL.getMarkup = function(a,b,c){...};

//use
PPL.getMarkup(...);

or


var PPL = {
   getMarkup: function(a,b,c){
      ...
   }
};

//use
PPL.getMarkup(...);

or

//this is the closest to a standard class, the other are anonymous objects
function PPL(){
   this.getMarkup = function(a,b,c){
      ...
   };
}

//use
var obj = new PPL();

obj.getMarkup(...);

Hope this helps. Also, if there is an error that someone notices, please correct me.

[Troy III]

Nope, you are correct all the way. :)

[VenusCrystal]

Thank you stbuchok.
Thanks for book suggestions.. will check on them .

If you don't know what the above is and it is part of your job to understand it, I would suggest reading "JavaScript, The Good Parts" by Douglas Crockford.

http://www.amazon.ca/JavaScript-Good-Parts-Douglas-Crockford/dp/0596517742/ref=sr_1_1?ie=UTF8&qid=1331554257&sr=8-1

And when you are done that (it's a short book), I would read "JavaScript, The Definitive Guide"

http://www.amazon.ca/gp/product/0596805527/ref=s9_simh_gw_p14_d0_g14_i3?pf_rd_m=A3DWYIK6Y9EEQB&pf_rd_s=center-2&pf_rd_r=0RDD0152H2PPFSC0MHX6&pf_rd_t=101&pf_rd_p=463383511&pf_rd_i=915398

PPL is more than likely an object with a function called getMarkup.

There are quite a few ways of writing this. One is as follows:

var PPL = {};

PPL.getMarkup = function(a,b,c){...};

//use
PPL.getMarkup(...);

or


var PPL = {
   getMarkup: function(a,b,c){
      ...
   }
};

//use
PPL.getMarkup(...);

or

//this is the closest to a standard class, the other are anonymous objects
function PPL(){
   this.getMarkup = function(a,b,c){
      ...
   };
}

//use
var obj = new PPL();

obj.getMarkup(...);

Hope this helps. Also, if there is an error that someone notices, please correct me.