92050 - citropia.net - Pretty JavaScript Mouse Trailer Fails

Status: RESOLVED WONTFIX

(Tech Evangelism Graveyard :: English US, defect, P4)

Description

[TommyBee (No E-mail)]

My friend seems to think that her JavaScript rocks and Netscape sucks.  I think
she just doesn't code well.  *grin*

Expected:  A butterfly in the clouds trailing the cursor.

Actual:  The images all stack up in the upper left corner of the page.

Strangely enough, in Netscape Communicator 4.78, the cursor trail appears just
fine, but the page won't display at all.

Comment 1

[Boris Zbarsky [:bzbarsky]]

Over to DOM0.

This is a dup, but I can't find the original.

The code uses a construct like this:

var foo = new dot(i)
function dot(i) {
  this.obj = document.getElementById("dot"+i).style;
}

The point is, it tries to create a new property by just setting it and this
fails. (put an 'alert(this.obj);' in the dot constructor to see that the setting
of this.obj does not work....

Comment 2

[Phil Schwartau]

This site uses insufficient browser-sniffing for Mozilla/N6, and 
non-W3C-compliant HTML. The site credits and uses the cursor-trail code 
from dynamicdrive.com:

      http://www.dynamicdrive.com/dynamicindex13/trailer2.htm


This code is valid for NN4.x, but not for a W3C-compliant browser
like Mozilla/N6.


EXAMPLES

1. the browser-sniffing: 

       var isNetscape = navigator.appName=="Netscape";

Without also including navigator.appVersion, you can't distinguish 
Mozilla/N6 from NN4.x


2. accessing elements like 

<div id="dot0" style=etc.>
  <img src="cloud1.gif" height=51 width=81>
</div>


is attempted as follows: 


function dot(i) 
{
    this.X = Xpos;
    this.Y = Ypos;
    this.dx = 0;
    this.dy = 0;
    if (isNetscape) {	
        this.obj = eval("document.dot" + i);  <<<<<<<<<< NOT IN MOZILLA/N6 !!!
    } else {
        this.obj = eval("dot" + i + ".style");
    }
}


To see this, key this into the Mozilla URL bar after loading the site :

    javascript: alert(typeof document.dot0);  ---> undefined

That's because in a W3C-compliant browser, you have to use this:

    javascript: alert(typeof document.getElementById("dot0"));  ---> object



etc. 
etc.
 

Comment 3

[Phil Schwartau]

Reassigning to Evangelism component. The bigger fish here is the site
indicated above: 

                    http://www.dynamicdrive.com

Template code provided here gets utilized by many sites. If it doesn't work 
in Mozilla/N6, none of those sites will, either. The specific template

             http://www.dynamicdrive.com/dynamicindex13/trailer2.htm 

is the one being used here...

Comment 4

[Phil Schwartau]

Raising severity to major because of the influence of dynamicdrive.com

Comment 5

[Bob Clary [:bc] (inactive)]

Ok, putting dynamicdrive on the radar...

Comment 6

[Bob Clary [:bc] (inactive)]

changed dynamicdrive tracking bug 92725

Comment 7

[Bob Clary [:bc] (inactive)]

All Evangelism Bugs are now in the Product Tech Evangelism. See bug 86997 for
details.

Comment 8

[Zach Lipton [:zach]]

Mass reassign of all tech-evangelism us general bugs assigned to bc to 
doron except bc's P1 bugs. You may search for this mass reassign (it is 
305 bugs) by searching for the keyword 'greeneggsandham'

Comment 9

[Mats Palmgren (inactive)]

URL is 404 - does this site still have a problem?

Comment 10

[Bob Clary [:bc] (inactive)]

tech evang june 2003 reorg

Comment 11

[Ian Schorr]

The Citropia site no longer exists, and the only remaining valid evangalism is
against Dynamicdrive, which is tracked in bug 92725.  Can we resolve this bug
please?

Comment 12

[Travis Chase]

Resolving Won't Fix