Get dropdown selected item onchange in jQuery

get dropdown list selected item onchange in jquery
When using dropdown list in asp.net application, we need to get value of selected item on onchange event of dropdown. In this post we will see example of how to get value of selected item using onchange event of dropdown.

<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<script src="Scripts/jquery-1.4.1.js" type="text/javascript"></script>
<script src="Scripts/jquery-1.4.1.min.js" type="text/javascript"></script>
<title>Get dropdown value</title>
<script type="text/javascript">
$(document).ready(function () {
$("#topics").change (function () {
var text = $("#topics option:selected").text();
var value = $("#topics option:selected").val();
alert("Selected text=" + text + " Selected value= " + value);
});
});
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:DropDownList ID="topics" runat="server">
<asp:ListItem Text="C#" Value="1"></asp:ListItem>
<asp:ListItem Text="jQuery" Value="2"></asp:ListItem>
<asp:ListItem Text="ASP.NET" Value="3"></asp:ListItem>
</asp:DropDownList>
</div>
</form>
</body>
</html>
Output

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