How do I call update command of gridview using javascript on text change of textbox in gridview

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I want to fire update command in my grid-view using JavaScript or jquery.
Below is my code of grid-view in aspx

<asp:TemplateField HeaderText="Quantity" ItemStyle-Width="12%">
   <ItemTemplate>
     
  <asp:TextBox ID="TxtQty" runat="server" Text='<%#  Eval("p_quantity") %>' Width="39px" ></asp:TextBox>
   <asp:LinkButton ID="LnkView" runat="server" CommandName="Update" CssClass="new28">Update</asp:LinkButton>
           </ItemTemplate>
   <HeaderStyle HorizontalAlign="Left" />
      </asp:TemplateField>

Below is my aspx.cs code
i want to call this command on text change event of TxtQty textbox.
Please help me in this code.

protected void GridView1_RowCommand1(object sender, GridViewCommandEventArgs e)
   {

if (e.CommandName == "Update")