How duplicate textbox value to another with button in asp.net

How duplicate textbox value to another with button in asp.net

I have a registration form and I woud like to make a button what after pressed some textboxe's value copied into some others. I can program it in C# but I would like to use jQuery to I dont have to postback it to the server.

<body>
    <form id="form1" runat="server">
    <div>
        <asp:Label ID="Label1" runat="server" Text="Name 1"></asp:Label>
        <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox><br/>
        <asp:Label ID="Label2" runat="server" Text="Address 1"></asp:Label>
        <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox><br/>
        <br />
        <asp:Button ID="Button1" runat="server" Text="copy" />
        <br />
        <asp:Label ID="Label3" runat="server" Text="Name 1 duplicate"></asp:Label>
        <asp:TextBox ID="TextBox3" runat="server"></asp:TextBox><br/>
        <asp:Label ID="Label4" runat="server" Text="Address duplicate"></asp:Label>
        <asp:TextBox ID="TextBox4" runat="server"></asp:TextBox><br/>
    </div>
    </form>
</body>