how i get grid view datakey value using JQuery or javascript.

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            string script = String.Format("GetdatakeyValue('{0}')", GridView1.DataKeys[e.Row.RowIndex].Value.ToString());
            e.Row.Attributes.Add("onclick",script);
        }
    }

<script language="javascript" type="text/javascript">
  
    function GetdatakeyValue(value)
    {
        alert (value );
    }
</script>