Difference between revisions of "Javascript"
Line 1: | Line 1: | ||
===OOP=== | |||
Literal Notation seems much more readable to me. | |||
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. | |||
<syntaxhighlight> | |||
anima=new Object(); | |||
anima.large = "elephant" | |||
anima['small'] = "mouse"; | |||
feline=new Object(); | |||
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> | |||
If you need multiple instances of a class (many objects) and you want to use literal notation then you could do it like this | |||
===JSON Objects and Arrays=== | ===JSON Objects and Arrays=== | ||
Use objects ...but... Objects treat indexes like an association. | |||
:arr[4]="dog" [ , , ,"dog"] | |||
:obj[4]= object [4:"dog"] | |||
===_SESSION variables=== | ===_SESSION variables=== |
Revision as of 17:41, 27 March 2013
OOP
Literal Notation seems much more readable to me.
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. <syntaxhighlight>
anima=new Object(); anima.large = "elephant" anima['small'] = "mouse"; feline=new Object(); 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> If you need multiple instances of a class (many objects) and you want to use literal notation then you could do it like this
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