Get the index of a single choice field dropdown

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Posted by tjon.kim - Jul 6 ’15 at 12:04

Hi,

 

We have a two choice dropdown fields in a custom SharePoint list with the same number of choices in each field, one for the item, and one for the unit cost of the item.

 

We are trying to get the form to automatically pick the choice from the 2nd dropdown based on a selection in the first. For example, if the first choice is selected in the first dropdown, the first choice is selected in the 2nd dropdown, etc etc (1 to 1 relationship).

 

Is this possible? How can we get the index of the single choice dropdown and use that to set the value of the 2nd choice dropdown?

 

Thanks in advance.

  • rostislav
    rostislav
    Moderator
    Member for: 8 years 22 days
    #1 by rostislav Jul 6 ’15 at 09:47

    To get selected item's index:

    fd.field('dropdown1').control()._el().find('select')[0].selectedIndex

    To set a select's selected item by index:

    fd.field('dropdown2').control()._el().find('option').eq().prop('selected', true);

    If you want to set your dropdown box No. 2 to the value of the dropdown box No.1 when the No.1 changes selected item, you can use the change event, like this:

     fd.field('dropdown1').change(function(){
         var selectedIndex = fd.field('dropdown1').control()._el().find('select')[0].selectedIndex;
        fd.field('dropdown2').control()._el().find('option').eq(selectedIndex).prop('selected', true);
});
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  • tjon.kim
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    Member for: 8 years 1 month 10 days
    #2 by tjon.kim Jul 12 ’15 at 10:41

    [#1]:  Thanks. That works!

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