javascript - How to clone div with html controls without their content using jquery & refresh dropdown for IE? -


i using jquery .clone() function clone div having 6 controls (dropdowns, textboxes etc) .i have functionality there 2 dropdowns ddl a & ddl b . changing ddl item populates content in ddl b. function works fine in chrome , firefox , ipad doesn't work in ie .

the scenario clone div of 6 controls add new row data entry, & when select item ddl , shows corresponding item in ddlb. when again select other item ddl a, options of ddl b don't refreshed . strange in firebug of ie ddl b shows proper options, view doesn't.

is ie doesn't refreshes dropdown before repopulation or doesn't understands jquery .clone() function ? can me proper solution ?

the problem ie not clears dropdown when script

$("#ddlb").empty();

the rest of browsers work fine snippet.

so need use

$("#ddlb")[0].options.length = 1;

these clears old dropdown state & data in ie. successful create functionality clone divs different html controls . following snippet 

$(function () {     $('.addrow').click(function () {          var clicknumrow = $(this).data('clicknumrow');          if (!clicknumrow) clicknumrow = 1;          $("#original").clone(true).insertbefore('.addnewrow').attr('id', 'original_' + clicknumrow);          $("#original_" + clicknumrow + " select#materialid")[0].options.length = 1;          $(this).data('clicknumrow', ++clicknumrow);      });   });

i refresh dropdown on selection change of dropdown item

$(function () {      $('select#categoryid').change(function () {          var url = "/material/fillmatbycatid";          var ddlsource = this;          var prt = $(this).parent().parent().parent().attr('id');          var ddltarget = '#' + prt + ' select#materialid';          if ($(this).val() != '') {              $.getjson(url, { catid: $(this).val() }, function (data) {                 $(ddltarget)[0].options.length = 1;                 $(ddltarget).empty();                 $.each(data, function (index, optiondata) {                  $(ddltarget).append("<option value='" + optiondata.value + "'>" + optiondata.text + "</option>");                 });             });          }      }); });

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