How to add static text to dropdown in jquery ajax call

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Hi friends,

I am binding values(options) to droopdown dynamically through webservice like this

JavaScript

$.ajax({
    type: "POST",
    contentType: "application/json; charset=utf-8",
    url: "MaterialRequestForm.aspx/BindBatches",
    data: "{'ItemCode':'" + ui.item.val + "'}",
    dataType: "json",
    success: function (data) {
        var seldata = [];
        $(id).empty().append("Select");
        $.each(data.d, function (key, value) {
          
$(id).append($("").val(value.BatchNum).html(value.Batch));
          
        });
    },
    error: function (result) {
        alert("Error");
    }
});

Now what I need is
If no option append to dropdown then append static text "Not available" to dropdown.

how to append static value dropdown on value empty???

What I have tried:

JavaScript

if($(id).find('option').length > 0)
{
$(id).append($("").val(value.BatchNum).html(value.Batch));
}
else
{
$(id).append("Not Available");
}

Posted 8-Aug-17 12:03pm

prasanna204

Updated 8-Aug-17 19:30pm

Bryian Tan

v2

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Karthik_Mahalingam · Answer 1 · 2017-08-08T19:30:00

try this

success: function (data) {

               var options = ["<option value=''>Select</option>"];
               if (data.d && data.d.length > 0) {
                   $.each(data.d, function (key, value) {
                       options.push("<option value='" + value.BatchNum + "'>" + value.Batch + "</option>");
                   });
               }
               else
                   options = ["<option value=''>Not Available</option>"];
               var html = options.join('');
               document.getElementById(id).innerHTML = html;


           }