Re: [jQuery] what's the difference betweendocument.getElementById('id') and $('#id') ?

2007-01-17 Thread Daniel McBrearty 
thanks Aaron, Michael! that makes it clear.

On 1/16/07, Michael Geary [EMAIL PROTECTED] wrote:
  Now that it is laid out in front of me it's pretty obvious,
  but when you come into the thing cold, these things are not
  obvious. I think it would be a good idea to explicitly state
  what the object is, and that $ refers to it (I think that's
  right ... now I mention it I'm not quite sure if $ is an
  object reference or an operator ... ) - anyhow just a bit of
  clarification of the basics.

 It's neither of the above. :-)

 $ is not an operator. In JavaScript, the $ character can be used in names in
 the same way as a letter.

 $ is also not a jQuery object or a reference to one. at all. It is a
 *function* that returns a jQuery object.

 A good way to think of the $ function is that it's just like a constructor
 function (e.g. Date or Array), except you don't use the new operator with
 it, you just call it.

 Consider this code:

   // Give the $ function a more self-explanatory name
   var createQueryObject = $;

   // Create a query object for a specified query string
   var myQueryObject = createQueryObject('#test');

   // Call a method of the query object
   myQueryObject.hide();

 That is the same as:

   $('#test').hide();

 Note also that $ and jQuery (used as a name in JavaScript code) are the same
 thing. So you could also write this code as:

   jQuery('#test').hide();

 Or:

   var myQueryObject = jQuery('#test');
   myQueryObject.hide();

 -Mike


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Daniel McBrearty
email : danielmcbrearty at gmail.com
www.engoi.com : the multi - language vocab trainer
BTW : 0873928131

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Re: [jQuery] what's the difference betweendocument.getElementById('id') and $('#id') ?

2007-01-16 Thread Daniel McBrearty 
yes. Thanks. I have it now.

Any takers on my what is the jQuery object question? Is it simply an
array of elements that have been selected?

It may be kind of obvious, but it took me a few days to figure it. It
might be good to explicitly say this somewhere early in the docs IMHO.

thanks again.

On 1/15/07, Dave Methvin [EMAIL PROTECTED] wrote:
  $(function () {
 self.focus();
 $(#userresponse).setAttribute(autocomplete,off);
 $(#userresponse).focus();
  });

 I would do this:

 $(function () {
self.focus();
$(#userresponse).attr(autocomplete,off)[0].focus();
 });

 There isn't a setAttribute method on a jQuery object, and I assume you want
 the DOM focus() method on #userresponse.


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Daniel McBrearty
email : danielmcbrearty at gmail.com
www.engoi.com : the multi - language vocab trainer
BTW : 0873928131

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Re: [jQuery] what's the difference betweendocument.getElementById('id') and $('#id') ?

2007-01-16 Thread Erik Beeson 

The jQuery object is a chunk of the DOM, on steroids.

--Erik

On 1/16/07, Daniel McBrearty [EMAIL PROTECTED] wrote:


yes. Thanks. I have it now.

Any takers on my what is the jQuery object question? Is it simply an
array of elements that have been selected?

It may be kind of obvious, but it took me a few days to figure it. It
might be good to explicitly say this somewhere early in the docs IMHO.

thanks again.

On 1/15/07, Dave Methvin [EMAIL PROTECTED] wrote:
  $(function () {
 self.focus();
 $(#userresponse).setAttribute(autocomplete,off);
 $(#userresponse).focus();
  });

 I would do this:

 $(function () {
self.focus();
$(#userresponse).attr(autocomplete,off)[0].focus();
 });

 There isn't a setAttribute method on a jQuery object, and I assume you
want
 the DOM focus() method on #userresponse.


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 jQuery mailing list
 discuss@jquery.com
 http://jquery.com/discuss/



--
Daniel McBrearty
email : danielmcbrearty at gmail.com
www.engoi.com : the multi - language vocab trainer
BTW : 0873928131

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Re: [jQuery] what's the difference betweendocument.getElementById('id') and $('#id') ?

2007-01-16 Thread Sam Collett 
On 16/01/07, Daniel McBrearty [EMAIL PROTECTED] wrote:
 yes. Thanks. I have it now.

 Any takers on my what is the jQuery object question? Is it simply an
 array of elements that have been selected?

 It may be kind of obvious, but it took me a few days to figure it. It
 might be good to explicitly say this somewhere early in the docs IMHO.

 thanks again.

It is a collection of selected elements, that can be batch processed
(events assigned, styles applied, classes added etc), but due the fact
that multiple types of elements (div, span, input etc) can be
selected, the methods of each element have to be accessed by index
(using get(n).focus() or [n].focus()).

It's really a pseudo array rather than a real array.

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Re: [jQuery] what's the difference betweendocument.getElementById('id') and $('#id') ?

2007-01-16 Thread Michael Geary 
 Now that it is laid out in front of me it's pretty obvious, 
 but when you come into the thing cold, these things are not 
 obvious. I think it would be a good idea to explicitly state 
 what the object is, and that $ refers to it (I think that's 
 right ... now I mention it I'm not quite sure if $ is an 
 object reference or an operator ... ) - anyhow just a bit of 
 clarification of the basics.

It's neither of the above. :-)

$ is not an operator. In JavaScript, the $ character can be used in names in
the same way as a letter.

$ is also not a jQuery object or a reference to one. at all. It is a
*function* that returns a jQuery object.

A good way to think of the $ function is that it's just like a constructor
function (e.g. Date or Array), except you don't use the new operator with
it, you just call it.

Consider this code:

  // Give the $ function a more self-explanatory name
  var createQueryObject = $;

  // Create a query object for a specified query string
  var myQueryObject = createQueryObject('#test');

  // Call a method of the query object
  myQueryObject.hide();

That is the same as:

  $('#test').hide();

Note also that $ and jQuery (used as a name in JavaScript code) are the same
thing. So you could also write this code as:

  jQuery('#test').hide();

Or:

  var myQueryObject = jQuery('#test');
  myQueryObject.hide();

-Mike


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Re: [jQuery] what's the difference betweendocument.getElementById('id') and $('#id') ?

2007-01-15 Thread Dave Methvin 
 $(function () {
self.focus();
$(#userresponse).setAttribute(autocomplete,off);
$(#userresponse).focus();
 });

I would do this:

$(function () {
   self.focus();
   $(#userresponse).attr(autocomplete,off)[0].focus();
});

There isn't a setAttribute method on a jQuery object, and I assume you want
the DOM focus() method on #userresponse. 


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