How to give id is an variable value in javascript

Question

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i want to use variable value as an id dropdown bind

What I have tried:

<asp:DropDownList ID="drp1" runat="server" class="btn btn-default form-control" onchange="selesectiondrop(this)">

<asp:DropDownList ID="drp2" runat="server" class="btn btn-default form-control" onchange="selesectiondrop(this)">

<script type="text/javascript">
google.setOnLoadCallback(loadsec);

function loadsec() {
// var obj = {};
// obj.sec = $.trim($("[id*=ddlsec]").val());
$.ajax({
url: "webmethod.aspx/Getsection",
// data: JSON.stringify(obj),
dataType: "json",
type: "POST",
contentType: "application/json; charset=utf-8",
success: function(r) {
var dr="drp";
for(vari=0;i<2;i++)
{
drp=drp+i;
}
var ddlsection = $("[id*=drp]");
ddlsection.empty().append('<option selected="selected" value="0">Select</option>');
$.each(r.d, function() {
ddlsection.append($("<option></option>").val(this['Value']).html(this['Text']));
});
},
error: function(XMLHttpRequest, textStatus, errorThrown) {
alert('Got an Error ');
}
});
}
</script>

Posted 18-Aug-16 19:05pm

Nethaji chennai

Updated 18-Aug-16 22:58pm

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2 solutions

Solution 1

try this

C#

var drp = "#drp";
        var temp =[];
        for (vari = 1; i <=2; i++)  
            temp.push(drp + i);
        var ddls = temp.join(','); // #drp1,#drp2
        var ddlsection = $(ddls);

Posted 18-Aug-16 19:35pm

Karthik_Mahalingam

Comments

Nethaji chennai 19-Aug-16 2:05am

is not work Karthik

Karthik_Mahalingam 19-Aug-16 2:06am

what is your expected

Nethaji chennai 19-Aug-16 4:57am

var id = "#" + dropdownchangeid;
var obj = {};
obj.userid = userid;
obj.chartid = chartid;
obj.filterid = filterid;
obj.columname = name;
obj.sel = selecttext
$.ajax({
url: "webmethod.aspx/dropdownonchange",
data: JSON.stringify(obj),
dataType: "json",
type: "POST",
contentType: "application/json; charset=utf-8",

success: function(r) {
//var ddlmachine = $("[id*=chart0Filter2drop1]");
var ddlmachine = $("[id*='" + dropdownchangeid + "']");

Karthik_Mahalingam 19-Aug-16 5:00am

what you are doing here var ddlmachine = $("[id*='" + dropdownchangeid + "']");

Nethaji chennai 19-Aug-16 5:04am

Karthik_Mahalingam 19-Aug-16 5:06am

unless you tell something i cant figure out your issue

Nethaji chennai 19-Aug-16 5:09am

iam binding dropdown list with dynamic data and dynamic dropdown id

Karthik_Mahalingam 19-Aug-16 5:10am

you can refer my earlier answer that does the same.

Nethaji chennai 19-Aug-16 5:12am

but not work for me . this code will work

Karthik_Mahalingam 19-Aug-16 5:13am

got ?
you have marked solution 2 as answer

Nethaji chennai 19-Aug-16 5:14am

yes

Karthik_Mahalingam 19-Aug-16 5:15am

good

Nethaji chennai 19-Aug-16 5:21am

welcome

Karthik_Mahalingam 19-Aug-16 5:23am

:)

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Nethaji chennai · Accepted Answer · 2016-08-18T22:58:00

JavaScript

var id = "#" + dropdownchangeid;
      var obj = {};
      obj.userid = userid;
      obj.chartid = chartid;
      obj.filterid = filterid;
      obj.columname = name;
      obj.sel = selecttext
      $.ajax({
          url: "webmethod.aspx/dropdownonchange",
          data: JSON.stringify(obj),
          dataType: "json",
          type: "POST",
          contentType: "application/json; charset=utf-8",

          success: function(r) {
          //var ddlmachine = $("[id*=chart0Filter2drop1]");
          var ddlmachine = $("[id*='" + dropdownchangeid + "']");