Need help on hitting "Enter" key to trigger a button...

Posted on 2009-07-15
Last Modified: 2012-06-22

I'm trying to make the "Enter" key function exactly the same as clicking on the Find button that has an ' OnClientClick="return validateForm()" ' and does a PostBack. In other words, if the user hits the "Enter" key on his keyboard after filling in the zip code, I need the "Enter" key to do exactly as clicking on the "Find" button.

Thanks very much in advance.

<script type="text/javascript" src="/js/jquery-1.2.1.js"></script>

    <script type="text/javascript">

        // <![CDATA[

        function validateForm() {

            var zipCode = $("input#<%= txtZipCode.ClientID %>").val();

            zipCode = $.trim(zipCode);

            var state = document.getElementById("<%= ddlState.ClientID %>").value;

            var objZip = document.getElementById("<%= txtZipCode.ClientID %>");

            if (zipCode == "" && state == "") {

                alert("Please enter a zip code or select a state!");


                return false;


            if (zipCode != "" && !validateZipCode(zipCode)) {

                alert("Please enter a valid zip code!");


                return false;



            return true;



        function validateZipCode(v) {

            var regex = /^\d{5}$|^\d{5}-\d{4}$/;

            return regex.test(v);


        // ]]>



	<form id="form1" runat="server">

        <table border="0" cellpadding="2" style="width:500px">

            <tr id="trZip" runat="server">

                <td style="text-align:right">Please enter a zip code</td>

                <td style="text-align:left">

                    <asp:TextBox ID="txtZipCode" Width="40px" MaxLength="5" Runat="server" />



            <tr id="trOR" runat="server">

                <td style="text-align:right">OR</td>



            <tr id="trState" runat="server">

                <td style="text-align:right;vertical-align:top">Select a state</td>

                <td style="text-align:left">








                    <asp:ListItem Text="Select State" Value="" />


                    <br /><br />

                    <asp:Button ID="btnFind" Text="Find" OnClick="btnFind_Click" OnClientClick="return validateForm()" Runat="server" />









            Runat="server" />



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Question by:WebAppDeveloper
1 Comment
LVL 13

Accepted Solution

drypz earned 500 total points
ID: 24865699
Hi! Do this is in your html form like this

<form id="form1" runat="server" defaultbutton="btnFind">

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