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One keydown event multiple actions problem.

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Jan 14.2009

We can have one event attached to multiple actions in javascript. I have facing problem in this scenario.

  • 1. I am having first.jsp, second.jsp

  • 2. Both pages load one.js and two.js
    3.In one.js, I am attaching document.attachEvent(“onkeydown”, functionOne).
    4.In two.js, I am attaching document.attachEvent(“onkeydown”, functionTwo).

    • Now I am loading page first.jsp. In first.jsp i have a button when i click on it second.jsp is loaded as popup window, that means first.jsp is parent and second.jsp is popup and both have one.js and two.js loaded simultaneously and events attached.

    Problem: (browser IE 6)
    In parent (first.jsp), when I press a key, functionTwo is executed first and then functionOne.
    In popup(second.jsp), when I press a key, functionOne is executed first and then functionTwo.

    Questions:
    1. when a event is attached to multiple functions then what is the priority by which they are called?
    2.In the above problem, why the functions are executing reverse? Which is the correct scenario? how to rectify the problem?

    I appreciate if some one can answer the above questions.

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    JavaScript

    4 Comments(s) ↴

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    @FangJan 14.2009 — http://msdn.microsoft.com/en-us/library/ms536343(VS.85).aspx
    If you attach multiple functions to the same event on the same object, the functions are called in random order[/QUOTE]
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    @sekhar_generalauthorJan 15.2009 — Thank you Feng for the reply. I have gone through the msdn link provided.

    Now I understand that the functions for the same event are fired in random. So, is there a way if I can make them sequence? I mean, is there a solution for this problem?
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    @FangJan 15.2009 — I would attach 1 event which calls the 2 functions in the correct order.
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    @sekhar_generalauthorJan 29.2009 — Thanks Fang, we have achieved the way you have explained. We are attaching only one function and internally calling other functions. Thank you for the help.
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