Quickbase API Quuestion. Need to populate 2 drop downs from separate tables

I have a web form which connects to a Quickbase application db.

The db has 2 tables with fields
Table: Region
Field: Region (which is populated)
Table:Site
Field: Site (which is also poplulated)

I need to be able to display the field selections available within QB on the drop down field within the html form field.

I am able to display the Regions field (named _fid_6 within QB)
However I can't figure out how to get the Site field from the Site table to display. Within the Site table it's id is also _fid_6.
js1138Asked:
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leakim971PluritechnicianCommented:
each time you change the first one, you need to clear the site dropdown and fill it with value where Site._fid_6 = Region._fid_6

generaly we use the onchange attribute :

<select id="RegionDropdown" onchange="updateSiteDropdown([b]this.value[/b]);">

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the value of each option is the ID of the Region : _fid_6

you've a javascript function to :

function updateSiteDropdown(_fid_6) {
       var SiteDropdown = document.getElementById("SiteDropdown");

       // clear it the Site Dropdown:
       SiteDropdown.options.length = 0
  
       // getOptionsWithAjaxCall; // http://www.w3schools.com/ajax/ajax_database.asp
       var options = Sites[_fid_6]; // Site is an object like this {    "1":[{v:10,t:"Site11"},{v:11,t:"Site12"},{v:12,t:"Site13"}],  "2":[{v:14,t:"Site2"}]   } where 1, 2 are _fid_6

       var o = new Option;
       var x;
       for(i=0;i<options.length;i++) {
             o.text = options[i].t;
             o.value = options[i].v;
             SiteDropdown.options[SiteDropdown.options.length] = o;
       }
}

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Jess HCommented:
Thought this may be helpful to others who have questions about the QuickBase API.  QuickBase updated their reference page to include a more detailed guide.  See it here: http://help.quickbase.com/api-guide/index.html
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