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Thread: strange variable behavior when meeting if condition

  1. #1
    Join Date
    Dec 2013
    Posts
    1

    strange variable behavior when meeting if condition

    Hello Everyone i'm writing a JS code which reads an XML file and extract required info from it, I want to find the name of a selected item, this is my code:

    Code:
    function initialize() {
        ct = $('menu').children().length;
    
        for(cati=0;cati<=ct-1;cati++) {
            cats[cati] = $('menu').children().eq(cati).prop('nodeName');
            var realname = cats[cati];
            if(realname.indexOf("0") != -1){
    	       realname = realname.replace(/0/g,'/');
    	}
    	realnames[cati] = realname;
        }
    
        var selecteditem = $(".selected").text();
    
        for(j=0;j<=cats.length;j++) {
            if(selecteditem == realnames[j]) {
                    selecteditem = cats[j];
            }
        }
    
        $("#gallery").empty();
        alert($('menu').find(selecteditem).prop('nodeName'));
    }
    here in my code when alerting using the last stmt there are two scenarios, the first one is when the if statement condition doesn't achieved, and in this case the alerting gives me the desired result(the selected item), but when the if statement condition achieved, the alerting gives me undifined although i'm certain that the cats[j] is an element in the XML file.

  2. #2
    Join Date
    Mar 2007
    Location
    localhost
    Posts
    2,964
    You are not writing JavaScript, you are using a JQuery tool or similar.
    STOP using $ prefix on JavaScript variable names...
    Please remember to wrap any code you have in forum tags:-

    [CODE]...[/CODE] [HTML]...[/HTML] [PHP]...[/PHP]

    If you can't think outside the box, you will be trapped forever with no escape...

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