[Prototype-core] Re: How can I access the object when using each?

2008-02-12 Thread Ken Snyder 

kojilab wrote:
 Hi

 I have an object with a method I call run that iterates over some form
 elements.
 I want to be able to execute a method of that object on each element.
 But when I use this in the function within the each() statement,
 obviously the this doesn't correspond to the object instance.
 Thanks for your help

 Code snippet:
 MyObject=Class.create();

 MyObject.prototype = {
   run: function(){
 this.formElements.each(function(el, index){
   this.doSomething(el);
 });
   },
  doSomething:function(){
   return;
  }
 }
   
Try $A(this.formElements).each(...);

this.formElements might be a HTML node collection object and not an array.

- Ken Snyder

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[Prototype-core] Re: How can I access the object when using each?

2008-02-12 Thread kojilab 

Hi Ken and Jon

Thanks for the info. Since I am not super familiar with the object
model in prototype, what would be the full code to call this
doSomething method within the each() function

Thanks again

On Feb 12, 12:28 pm, Ken Snyder [EMAIL PROTECTED] wrote:
 kojilab wrote:
  Hi

  I have an object with a method I call run that iterates over some form
  elements.
  I want to be able to execute a method of that object on each element.
  But when I use this in the function within the each() statement,
  obviously the this doesn't correspond to the object instance.
  Thanks for your help

  Code snippet:
  MyObject=Class.create();

  MyObject.prototype = {
run: function(){
  this.formElements.each(function(el, index){
this.doSomething(el);
  });
},
   doSomething:function(){
return;
   }
  }

 Try $A(this.formElements).each(...);

 this.formElements might be a HTML node collection object and not an array.

 - Ken Snyder
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[Prototype-core] Re: How can I access the object when using each?

2008-02-12 Thread Jon L. 

For further info: http://prototypejs.org/api/function/bind

- Jon L.

On Feb 12, 2:24 pm, Jon L. [EMAIL PROTECTED] wrote:
 You can use the bind method.

   this.formElements.each(function (el, index) { ... }.bind(this));

 - Jon L.

 On Feb 12, 2:05 pm, kojilab [EMAIL PROTECTED] wrote:





  Hi

  I have an object with a method I call run that iterates over some form
  elements.
  I want to be able to execute a method of that object on each element.
  But when I use this in the function within the each() statement,
  obviously the this doesn't correspond to the object instance.
  Thanks for your help

  Code snippet:
  MyObject=Class.create();

  MyObject.prototype = {
run: function(){
  this.formElements.each(function(el, index){
this.doSomething(el);
  });
},
   doSomething:function(){
return;
   }

  }
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