preventing an event handler attached by attachEvent getting executed

[wolverine]

Hi,
I am injecting a javascript code into html pages and attaching
some dom events to some elements via attachEvent (IE only). I just
want to know that is there any chance by which my event handler not
getting executed ? ie, is there some means for the web developer to
prevent any further handler getting executed for the same event on the
same element ?

To be more clear, assume the web developer has attached function
"f1()" on onclick of <a> tag. I will then go on attaching function
f2() to onclick of the same <a> tag. Is there some thing in "f1()"
that can prevent f2() from getting executed ?

Thanks in Advance
Kiran.

 

[GArlington]

Hi,
I am injecting a javascript code into html pages and attaching
some dom events to some elements via attachEvent (IE only). I just
want to know that is there any chance by which my event handler not
getting executed ? ie, is there some means for the web developer to
prevent any further handler getting executed for the same event on the
same element ?

To be more clear, assume the web developer has attached function
"f1()" on onclick of <a> tag. I will then go on attaching function
f2() to onclick of the same <a> tag. Is there some thing in "f1()"
that can prevent f2() from getting executed ?

Thanks in Advance
Kiran.

1) Are you sure that BOTH event listeners are registered?
2) Try to see if the following will help
http://www.quirksmode.org/js/events_advanced.html

 

[David Mark]

Hi,
I am injecting a javascript code into html pages and attaching
some dom events to some elements via attachEvent (IE only). I just
want to know that is there any chance by which my event handler not
getting executed ? ie, is there some means for the web developer to
prevent any further handler getting executed for the same event on the
same element ?

To be more clear, assume the web developer has attached function
"f1()" on onclick of <a> tag. I will then go on attaching function
f2() to onclick of the same <a> tag. Is there some thing in "f1()"
that can prevent f2() from getting executed ?

Not that I know of.

 

[wolverine]

1) Are you sure that BOTH event listeners are registered?

Yeah both f1() and f2() are registered. Let me make my question more
clear. Assume i have attached an event handler by attachEvent. I am
asking is there anything that can prevent my event handler getting
called, unless i call a detachEvent to remove my handler.

2) Try to see if the following will helphttp://www.quirksmode.org/js/events_advanced.html

Thanks for the link. It helped me understand some concepts on events
handling. But that didn't answer my question.