Understanding Array Object's? baskets[baskets.length]=o;

[divina11]

A Simple program, all I'm trying to do is input item and quantity into a text box and then display them, I have written the following code, however I'm unclear what the following line does: baskets[baskets.length]=o;

Can someone explain to me what this line actually does? Thank you


See below for my coding:

[code=javascript]

var baskets=[];

function doAction() {

var item=document.g etElementById(" item").value;
var quantity=docume nt.getElementBy Id("quantity"). value;

var o=new basket(item,qua ntity);
baskets[baskets.length]=o;
ShowItem_All();
}

function basket(item,qua ntity) {

this.item=item;
this.quantity=q uantity;
}[/code]

[pbmods]

Heya, Divina.

Please use CODE tags when posting source code. See the REPLY GUIDELINES on the right side of the page next time you post.

[gits]

hi ...

i comment the code:


[code=javascript]

// declare an array for storing your items
var baskets = [];

function doAction() {
// retrieve the inputvalues
var item = document.getEle mentById("item" ).value;
var quantity = document.getEle mentById("quant ity").value;

// create an instance of the below defined obj basket
// it calls the constructor with two params that are
// instantly assigned as member variables to the obj-
// instance
var o = new basket(item,qua ntity);

// add the instance to the array at the last index
// it is the same as baskets.push(o) ;
baskets[baskets.length] = o;

// some function call
ShowItem_All();
}

// this is the constructor (quasi-class) for a basket-obj
// it receives 2 params that are stored in the obj-instance
function basket(item, quantity) {
this.item = item;
this.quantity = quantity;
}
[/code]

kind regards

[divina11]

Thank you Gits, that was a very clear explaination.

Ta XXX

[gits]

hi ...

no problem ... glad to be able to help you ... and whenever you have more questions then post in the forum again

kind regards