Question

When I populate a dropdown by using for loop and json object ,it adds undefined option in dropdown at end .

 for (var i in PriceRanges[purpose]) {
        var r = PriceRanges[purpose][i];
        html += '<option value="' + r.id + '">' + r.text + '</option>';
}

Where PriceRanges is my json object.
Thanks for any help in advance.

Answer 1

just check for undfied like this and than add

for (var i in PriceRanges[purpose])
 {
         var r = PriceRanges[purpose][i];
         if (typeof r != "undefined") 
         {
            if (typeof r.id != "undefined"
                  && typeof r.text != "undefined")
            html += '<option value="' + r.id + '">' + r.text + '</option>';
         }
 }