How to filter items in dropdown list through textbox using javascript?

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I want to display all the items in the dropdown list with starting string.
For example if I type app in textbox it must display all the items starting with letter "app". Like this: Apple

I don't want to filter like this:

Apple
Pineapple

Please Help me....

~~It's very urgent~~

Here is my code:

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Search and Filter a DropDownList</title>
    <script src="Scripts/jquery-1.3.2.min.js">
        type="text/javascript"&gt;</script>
    
    <script type="text/javascript">
        $(function() {
            var $txt = $('input[id$=txtNew]');
            var $ddl = $('select[id$=DDL]');
            var $items = $('select[id$=DDL] option');
            $txt.keyup(function() {
                searchDdl($txt.val());
            });
            function searchDdl(item) {
                $ddl.empty();
                var exp = new RegExp(item, "i");
                var arr = $.grep($items,
                    function(n) {
                        return exp.test($(n).text());
                    });
                if (arr.length &gt; 0) {
                    countItemsFound(arr.length);
                    $.each(arr, function() {
                        $ddl.append(this);
                        $ddl.get(0).selectedIndex = 0;
                    }
                    );
                }
                else {
                    countItemsFound(arr.length);
                    $ddl.append("<option>No Items Found</option>");
                }
            }
            function countItemsFound(num) {
                $("#para").empty();
                if ($txt.val().length) {
                    $("#para").html(num + " items found");
                }
            }
        });
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
                <asp:textbox id="txtNew" runat="server" xmlns:asp="#unknown">
            ToolTip="Enter Text Here"&gt;</asp:textbox><br />
        <asp:dropdownlist id="DDL" runat="server" xmlns:asp="#unknown">
            <asp:listitem text="Apple" value="1"></asp:listitem>
            <asp:listitem text="Orange" value="2"></asp:listitem>
            <asp:listitem text="Peache" value="3"></asp:listitem>
            <asp:listitem text="Banana" value="4"></asp:listitem>
            <asp:listitem text="Melon" value="5"></asp:listitem>
            <asp:listitem text="Lemon" value="6"></asp:listitem>
            <asp:listitem text="Pineapple" value="7"></asp:listitem>
            <asp:listitem text="Pomegranate" value="8"></asp:listitem>
            <asp:listitem text="Mulberry" value="9"></asp:listitem>
            <asp:listitem text="Apricot" value="10"></asp:listitem>
            <asp:listitem text="Cherry" value="11"></asp:listitem>
            <asp:listitem text="Blackberry" value="12"></asp:listitem>
        </asp:dropdownlist>
            </div>
    </form>
</body>
</html>

Posted 5-Sep-10 4:04am

huzaifa.osman

Updated 5-Sep-10 7:40am

Sandeep Mewara

v2

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Sandeep Mewara 5-Sep-10 13:41pm

Use PRE tags to format your code part. It makes the question readable.

1 solution

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Al-Farooque Shubho · Answer 1 · 2010-09-05T17:04:00

Solution 1

Probably you need this : Adding 'Google Suggest' functionality to an ASP.NET application[^]

Or, this : http://mattberseth.com/blog/2007/12/creating_a_google_suggest_styl.html[^]

Posted 5-Sep-10 17:04pm

Al-Farooque Shubho