[RESOLVED] Javascript: $ Symbol Meaning

[code?]

What does "$" do exactly? I've seen it in a couple of scripts.

Ex: $name = "rocky";

[javajawa]

As far as I'm aware, i makes no difference, as you can start a variable name in Javascript with anything you like...

If you've seen it in one of my scripts, it's a leftover habit because I've been doing a lot of PHP currently, and that requires that all variables begin with a $. As it (as far as I know) makes no difference, I use it to save mistakes in PHP.

[code?]

Oh ok, I just googled it and sometimes it's used for regex.

What does

(div.visible(element) ? 'hide' : 'show']

do? I want to learn about that syntax.

[javajawa]

What does

(div.lement.visible(element) ? 'hide' : 'show']

do? I want to learn about that syntax.

variable = (condition ? result1 : result2);

Is equivalent to

if (condition) {
  variable = result1;
} else {
  variable = result2;
}

[code?]

Lol, one more question...

How would I type up a static class in javascript, So I could easily write...

Class.Function.DoIt();

...without having to write...

var Class = new myClass();

Also, i googled "javascript class" and dug around and found

// JavaScript Pet class

function Pet(name) {
    this._name = name;
}

Pet.prototype._name;

Pet.prototype.getName = function() {
    return this._name;
}

Now, could you get _name without using the getName function?

thats about it.

[javajawa]

What about:

Pet.prototype.name;
-OR-
Pet.prototype.name = "NO NAME";

As for a static class, I'll throw you a really complex example - it's a UTF-8 encoder:
Some of the syntax is wierd - I think there using one of the JavaScript variants.

var Url = {
    encode : function (string) {
        return escape(this._utf8_encode(string));
    },
    decode : function (string) {
        return this._utf8_decode(unescape(string));
    },
    _utf8_encode : function (string) {
      //Code removed for sanity's sake
    },
    _utf8_decode : function (utftext) {
      //Code removed for sanity's sake
    }
}

s = Url.encode(s)

[PeejAvery]

The $ (dollar sign) is a custom function. It is not for regex, nor does it have anything to do with PHP.

It was created a few years back to make the process of finding/getting elements much simpler. Take a look at this post from my website. It clarifies this well.

(statement) ? true : false;

This is known as ternary logic. Nice and simple. It takes an if statement to one line and makes the processing much faster.

How would I type up a static class in javascript, So I could easily write...

Let's make this much simpler...try using objects. They go hand in hand with classes.

var myObject = {
  myFunction = function(str) {
    alert(str);
  },

  myRandomVariable: 'Hello world!'
}

// then to call it
myObject.myFunction('Hello world!');