Execute InsertQuery command from SqlDataSource in JavaScript

I am using ASP.NET

If I want to execute my Insert command from my SqlDataSource in my code behind I would do this.

SqlDataSource1.Insert()

But how would I be able to do this in JavaScript?

<script type='text/javascript' language="javascript"> 

  function valSubmit() {

  //Need to call the Insert Command here!

  }

</script>

OR

Where in my code behind can I place the Insert() command to make sure only after my valSubmit() function in JavaScript have executed it will then execute the Insert Command?

Create a Web Handler that will invoke the Insert method and call this handler using your preferred AJAX method.

Create Ajax method Example of Ajax method

$.ajax({ type: POST, url: url, data: data, success: success, dataType: dataType }); function success() { alert(data saved); }
URL : a new page for example ajax.aspx.On this page load you can write your method for insertion. Data : Parameters, These will be accessed using Request.Querystring

and call server methods which are used for insertion or any other operation.