$.noconflict(); is not working in dynamic controls

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VB

Javascript

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JScript.NET

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Am creating a popup with Dynamic textbox and make it to select date by assigning Datepicket to it by using jquery as follows:

Dim htmlString As string= "<script type='text/javascript'>" & _
                          "$.noConflict();" & _
                          "jQuery('#txtStartDate').css({" & _
                          "'position': 'relative',  " & _
                          "'z-index': 999999 });" & _
                          "jQuery(document).on('focus','#txtStartDate',function(){" & _
                          "jQuery('#txtStartDate').datepicker({ dateFormat: 'dd-mm-yy', maxDate: new Date()});" & _
                          "jQuery('.datepicker').focus();});" & _
                          "</script>" & _

but it is not Working, popup is not showing because of it.