Any way to read custom html attributes in firefox/opera ?

[andyjgw]

Hi

Just a quick question - I guess this is more a 'standards' thing than
anything else.

I'm working on a digital mapping application. One of the things I'm
doing is outputting the IMG tag thus (just a sample):

< img id="myMap" src="somemap.gif" northing="1" easting="2" >

The reason I'm doing this is I'm looking to output some useful
information into the page from my asp.net source without resorting to
'tricks' like hidden input fields etc but still have them visible to
client-side JS.

In IE, I can read document.getElementById("myMap").northing, but when I
try this in Opera/Firefox these custom attributes aren't available.

Does anyone have any suggestions as to what I can do here?

Thanks in advance
AW

 

[BootNic]

Hi

Just a quick question - I guess this is more a 'standards' thing than
anything else.

I'm working on a digital mapping application. One of the things I'm
doing is outputting the IMG tag thus (just a sample):

< img id="myMap" src="somemap.gif" northing="1" easting="2" >

The reason I'm doing this is I'm looking to output some useful
information into the page from my asp.net source without resorting to
'tricks' like hidden input fields etc but still have them visible to
client-side JS.

In IE, I can read document.getElementById("myMap").northing, but when
I try this in Opera/Firefox these custom attributes aren't available.

Does anyone have any suggestions as to what I can do here?

Thanks in advance
AW

document.getElementById('myMap').getAttribute('northing')

 

[Richard Cornford]

<img id="myMap" src="somemap.gif" northing="1" easting="2" >

In IE, I can read document.getElementById("myMap").northing,
but when I try this in Opera/Firefox these custom attributes
aren't available.

Does anyone have any suggestions as to what I can do here?

The most reliable approach to reading custom attributes is the -
getAttribute - method (with the assumption that the attribute name is
case sensitive, even though it officially doesn't need to be in HTML).

Richard.

 

[AndrewW]

Thanks guys, that's exactly what I was after

Never heard mention of a getAttribute method before, so.. cheers!

AW