Difference between revisions of "Javascript"
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{{:javascript OOP using Literal Notation}} | |||
===JSON Objects and Arrays=== | ===JSON Objects and Arrays=== |
Revision as of 17:54, 27 March 2013
javascript OOP using Literal Notation
Literal Notation seems much more readable to me.
OOP single
In cases where you don't need multiple instances of a Class, then it is easy to create a object like this: <syntaxhighlight>
var obj={ tisel : new Array(), tesel : "" , ulsel : '.prog-tes ul', lisel : '.prog-tes ul li', idx : 0, arr : new Array(), new : function(){ this.tesel="dog"; this.tisel[0]="cat"; return "frog"; } }; obj.new();
</syntaxhighlight> You declare all your variables. Make a fake new or constructor to initalize.
OOP multiple instances
If you need multiple instances of a class (many objects) and you want to use literal notation then you could do it like this <syntaxhighlight>
anima=new Object(); anima.large = "elephant" anima['small'] = "mouse"; feline=new Object(); feline=new Array(); feline[4]=anima; function MyClass(animal,feline){ this.tesel=animal; this.tisel=feline; return "frog"; } MyClass.prototype={ ulsel : '.prog-tes ul', lisel : '.prog-tes ul li', idx : 0, arr : new Array(), new : function(){ console.log(this.tesel); this.tesel="jerk"; this.tisel[17]="drugs"; this.tisel[0]="rock"; } }; obj=new MyClass(anima,feline);
</syntaxhighlight> The stuff above function Myclass is just junk to try to see the diffferences between arrays and objects.
JSON Objects and Arrays
Use objects ...but... Objects treat indexes like an association.
- arr[4]="dog" [ , , ,"dog"]
- obj[4]= object [4:"dog"]
_SESSION variables
The problem with having stuff happen on the server is that it always forgets what is going on from moment to moment. The server waits for a request, it could be from anywhere in the world. It doesn't know you from a whole in the wall. The only thing you can do to be remembered is stick stuff in _SESSION variables.
http://www.javascript-coder.com/javascript-form/javascript-get-form.htm