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Re: Question about reference to style properties

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Am 2012-09-27 09:55, Erwin Moller meinte:
 > Hi clj,
 >
 > Please consider the following 2 examples:
 >
 > Example1: (works as intended)
 > =========================================================
 > <span class="ahrefmimic"
 >   onClick="var curStyle =
 >     document.getElementById('techdiv').style;
 >     curStyle.display=((curStyle.display=='block')?'none':'block');
 > ">on/off</span>
 > <div id="techdiv" style="display:none;">
 > ....
 > </div>
 > =========================================================
 >
 >
 > Example2: (Doesn't work as intended, but no errors)
 > =========================================================
 > <span class="ahrefmimic"
 >   onClick="var curStyleDisp =
 >     document.getElementById('techdiv').style.display;
 >     curStyleDisp=((curStyleDisp=='block')?'none':'block');
 > ">on/off</span>
 > <div id="techdiv" style="display:none;">
 > ....
 > </div>
 > =========================================================
 >
 >
 > Example 1 works as (I) intended: It makes div techdiv appear and
 > disappear when clicking on 'on/off'.
 > The second example doesn't do anything (no error message either).
 >

The first one establishes a reference to your style object (I'm sure I 
got my wording wrong - Thomas will correct that :-) ) and you access and 
set a property of this object.

In the latter case you assign a string value to a variable and overwrite 
this value depending on its previous value. There is no longer a 
reference to your style object established.

 > In example2, am I just changing the value of a String that has no
 > connection to the original style.display property?

Yes. How should it?

Gregor

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Question about reference to style properties Erwin Moller <erwinmollerusenet@xs4all.nl> - 2012-09-27 09:55 +0200
  Re: Question about reference to style properties Gregor Kofler <usenet@gregorkofler.com> - 2012-09-27 10:08 +0200
    Re: Question about reference to style properties Erwin Moller <erwinmollerusenet@xs4all.nl> - 2012-09-27 10:25 +0200
      Re: Question about reference to style properties Gregor Kofler <usenet@gregorkofler.com> - 2012-09-27 14:03 +0200
      Re: Question about reference to style properties Martin Honnen <mahotrash@yahoo.de> - 2012-09-27 14:01 +0200
        Reference basics  (Was: Question about reference to style properties) Erwin Moller <erwinmollerusenet@xs4all.nl> - 2012-09-27 14:46 +0200
          Re: Reference basics  (Was: Question about reference to style properties) Martin Honnen <mahotrash@yahoo.de> - 2012-09-27 15:09 +0200
          Re: Reference basics  (Was: Question about reference to style properties) Gregor Kofler <usenet@gregorkofler.com> - 2012-09-27 15:16 +0200
          Re: Reference basics (Was: Question about reference to style properties) Scott Sauyet <scott.sauyet@gmail.com> - 2012-09-27 06:35 -0700
            Re: Reference basics (Was: Question about reference to style properties) Scott Sauyet <scott.sauyet@gmail.com> - 2012-09-27 06:42 -0700
            Re: Reference basics (Was: Question about reference to style properties) Erwin Moller <erwinmollerusenet@xs4all.nl> - 2012-10-01 09:14 +0200

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