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Previous handlers are not called - why?

in Using jQuery • 8 years ago

Here's my JS fiddle where I tried to add my own handler in already existing chain. It's called but forgets totally about the ones that were defined earlier. I need to call these predecessors no matter whether they're defined in a static HTML or by DOM manipulation. How can I do this?

Replies(10)

watusiware

Re: Previous handlers are not called - why?

8 years ago

What is it that you are trying to accomplish? Why would you want to structure your code like this?

Most of us do not use inline Javascript handlers. It is a regrettable HTML feature that should be forgotten.

watusiware

Re: Previous handlers are not called - why?

8 years ago

Your inline handlers don't work at all. It's because you have the Fiddle set-up for put the Javascript in an onload, and so the function has not yet been defined when the HTML is parsed.

You would need to define your function(s) called from the inline code in <head>, or at least before the HTML that references it.

Has nothing to do with jQuery. Basic HTML parsing issue.

This is one of the many reason most of us do not use this obsolete coding style.

senglory

Re: Re: Previous handlers are not called - why?

8 years ago

Regarding these static handlers I can't eliminate them at all- they're created by another server-side code, and I have no affection on them. The only thing that I can do is to put my handler in front of all of them, so the resulting sequence should be:

"clicked" then "000" or "ppp"

watusiware

Re: Previous handlers are not called - why?

8 years ago

http://jsfiddle.net/3La05jnw/5/

watusiware

Re: Previous handlers are not called - why?

8 years ago

http://jsfiddle.net/3La05jnw/7/

(Be careful you get the /7/ version. For some reason when I click on the link it gives me version 5...)

Unfortunately, you do not get to pick the order of execution. href Javascript is the "action" and so will always come last.

Adobe or Microsoft? They both have done a disservice to developers by encouraging this messy practice. Of course, it was originally the only way. Unfortunately, it stuck.

It could be worse. It could be writing volumes of code directly in the inline handlers, instead of allowing you to define functions and call them.

senglory

Re: Re: Previous handlers are not called - why?

8 years ago

Tried the 7th version, but no luck. It still calling Del() as the very first function, and my one is called only after that. I still need a way to have Del() called after my handler was invoked.

watusiware

Re: Previous handlers are not called - why?

8 years ago

Like I said, you don't get to choose the order. It is what it is.

Maybe you don't like that the sky is blue. Maybe you would prefer that it were red. But it is blue. I can't make it red for you.

You could write your own browser, and then you can change the order.

senglory

Re: Re: Previous handlers are not called - why?

8 years ago

I think you don't quite get what I want. I would like to have my code to override the "click" handler with opportunity of invoking previously assigned handlers directly from my code. On this sample I do the assignment, it shows "clicked" exactly as it was supposed to do, but doesn't call Del() method. I'd like to change my code to call the stuff previously written in the "onclick" attribute from my function. And BTW , I saw a similar topic on StackOverflow , but in my case it doesn't work for some reason.