push()

[slayer766]

JavaScript has a built in push() function which allows a coder to add more arrays to an existing array. So lets say we have an array like so:

Code:

<script type="text/javascript">
//push() explanation

var Set = [];
Set[0] = ["Wow"]
Set[1] = ["this"]
Set[2] = ["is"]

document.write(Set);
</script>

Now anyone who knows how an array works would know that this would write out Wow,this,is

Ok, now for the function push() this method is very simple to understand and you can pass this function MANY parameters. The function is set-up like this:

Code:

<script type="text/javascript">
//push() explanation

var Set = [];
Set[0] = ["Wow"]
Set[1] = ["this"]
Set[2] = ["is"]

Set.push("crazy");

document.write(Set);
</script>

Now you see that we've basically appended the word "crazy" to the existing array. Which now the array would output like so:

Wow,this,is,crazy


That's all the push() method is about, nothing extreme, but quite useful.

[Vitality]

I've seen push() a bunch of times, but never new what i was. Simple to understand, and clear tutorial. Nice one slayer

[slayer766]

Thanks. I've never used it though, just thought I might write one up. ^_^

[Chireru]

AWESOME
BEST THING EVER

oh yeah, you can also do something like this

document.write(set+"crazy");

LOL

sorry, my smartass impulse was just too much to resist
lol

[slayer766]

Yes adding just something simple like text to an array you can also do that, but if you wanted something more complex of push you would do something like this:

Code:

var elements = new Array();
for (var i = 0; i < arguments.length; i++) {
var element = arguments[i];
if (typeof element == 'string')
element = document.getElementById(element);
if (arguments.length == 1)
return element;
elements.push(element);
}
return elements;