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Thread: Statement seems to be ignored unless something exec before it.

  1. #1

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    Hyperactive Member Krokonoster's Avatar
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    Statement seems to be ignored unless something exec before it.

    Hi,
    Got 3 cascading dropdowns (Clients -> Departments -> Teams) and loading their data using jquery ajax calls. (there are a lot to the rest of the form though, though not related to this problem )

    Since I am clearing dropdowns and hiding elements all over, I wanted to created a function that can be called any time that will do that in one place). however I soon got stuck.

    The following code works perfectly, until I one uncomment the alert. From then, the next line seems to just get ignored.

    Code:
    function SetControlsVisibility() {
        var clientId = $("select#ClientId > option:selected").attr("value");
        if (clientId == '' || clientId == undefined) {
            alert("abc");
            $('#DepartmentId').empty().prev().text("");   // ain't do it if no alert....
            .....
    got a strong feeling of devaju here, but just cannot remember where I ran into this issue before though.


  2. #2
    MS SQL Powerposter szlamany's Avatar
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    Re: Statement seems to be ignored unless something exec before it.

    I've also experienced issues like this - not sure how I cleared it up.

    Do you have some kind of missing ; somewhere? I save backup copies of my JS code so I can do a quick WINDIF when something like this happens.

    How about changing your code to this:

    Code:
            var wesDept = $('#DepartmentId');
            wesDept.empty().prev().text("");   // ain't do it if no alert....
    Does that run?

    Can you break/step at that spot with FIREBUG??

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  3. #3

    Thread Starter
    Hyperactive Member Krokonoster's Avatar
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    Re: Statement seems to be ignored unless something exec before it.

    Hi,
    Nope, that seems not to work.

    Unfortunately (NOTE: I quit from this and just working out my notice) the environment I work in, you log into a remote machine, without internet, with vs installed on it. so cannot install firefox, let alone firebug. Have this been on my own machine i probably would sort it out in a few. But crippled like this.


  4. #4
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    Re: Statement seems to be ignored unless something exec before it.

    This is needlessly convoluted:
    Code:
    var clientId = $("select#ClientId > option:selected").attr("value");
    //equivalent to:
    var clientId = $("#ClientId").val();
    Can't really tell what the problem is; was unable to reproduce it with an assumptive setup. It might help if you can provide more context (the markup and any other related scripting).

  5. #5
    MS SQL Powerposter szlamany's Avatar
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    Re: Statement seems to be ignored unless something exec before it.

    Quick note on what SambaNeko posted

    Using a SELECTOR of an HTML ID is one of the fastest selectors - jQuery is optimized to locate that DOM element - always DESCEND from an #ID

    http://www.artzstudio.com/2009/04/jq...ormance-rules/

    And note that my wesDept - although not meaningful in this context - is really important to use. Always cache the selection if it's going to be used repeatedly. To me wes stands for "wrapped element set".

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  6. #6

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    Hyperactive Member Krokonoster's Avatar
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    Re: Statement seems to be ignored unless something exec before it.

    Thanks guys. Will try again tomorrow, strip things down and post some more I cannot solve it.
    Thanks a lot.


  7. #7
    MS SQL Powerposter szlamany's Avatar
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    Re: Statement seems to be ignored unless something exec before it.

    Did you get a resolution to this??

    *** Read the sticky in the DB forum about how to get your question answered quickly!! ***

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    [ Solution to non-domain Windows Authentication ] [ Crazy things we do to shrink log files ] [ SQL 2005 Features ] [ Loading Pictures from DB ]

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