Can not pass ID with dot(.) and (-) to javacript

Tamanna16 · 02-13-2013, 06:23 AM

Html code:
<input id="text.id" type="text" onFocus="dosomething(this,'text1.id')">
<input id="text1.id" type="text">

i am trying to do something like above, i'm trying to pass id(text1.id) with function dosomething() but its not working.
please help me.

durangod · 02-13-2013, 06:31 AM

use the _ not the dot, i dont think . is a legal name character..

text_id

Tamanna16 · 02-13-2013, 06:37 AM

Thank you for your reply durangod. but can't change ID name. i have to go with text1.id.
any other suggestion???

Philip M · 02-13-2013, 07:22 AM

Quote:

Originally Posted by Tamanna16

Thank you for your reply durangod. but can't change ID name. i have to go with text1.id.
any other suggestion???

Well, in that case you are in the craperoo as the Australians would say. A period (dot) is not a legal character in an element id (or a name).

felgall · 02-13-2013, 07:34 AM

That id wouldn't work for anything else either - not just JavaScript.

In CSS #text.id would be looking for an element with id="text" and class="id" and wouldn't match the id you have.

I can't think of why someone would want to target an input field but I doubt that <a href="text.id"> would link to that field properly either.

That's all three possible uses for an id with at least two and probably all three of them not working when the id contains an illegal dot.

Tamanna16 · 02-13-2013, 08:41 AM

thank you all for your valuable reply....
My work is done.

VIPStephan · 02-13-2013, 10:14 AM

Quote:

Originally Posted by felgall

I can't think of why someone would want to target an input field but I doubt that <a href="text.id"> would link to that field properly either.

The ID on inputs is used for labels. I don’t know whether the link is made if there is a period in the ID, though.

felgall · 02-13-2013, 09:08 PM

Quote:

Originally Posted by VIPStephan

The ID on inputs is used for labels. I don’t know whether the link is made if there is a period in the ID, though.

It appears that the id does still work for linking a label to an input even when the id contains garbage - at least in all the popular browsers. That is the one instance where a period doesn't apply a different meaning in one place to what it does at the other. You wouldn't be able to access the forHTML value from JavaSript though because it too would misinterpret the dot.