Question: I'm working on a asp.net page and I have several buttons in my page, some of them are asp.net buttons, other are HTML `input[type=button]` elements. HTML buttons are used to make AJAX calls.

When the user press ENTER I need to set as default button one of these HTML buttons, but at the moment the first button in the page is trigged.

Is there a way to set a plain HTML button as default on my form?

Answer: 
Try this : 

```
   // JavaScript Code
   var body = document.getElementsByTagName('body')[0];
    body.onkeydown = function (e) {
        if (e.keyCode === 13) {  //enter key code
         // call your html button onclick code here
        }
    }

```
read this article
<http://www.codeproject.com/Articles/35180/How-To-set-Default-Button-for-ENTER-key-pressed-ev>

you can use it in somewhat this way

```
<form id="form1" runat="server" defaultbutton="Button1" >

```