Conversion of sharepint list to pdf and excel document ?

<script type="text/javascript" src="https://workspace.wp.siemens.com/sites/LTIDev/LTI/SiteAssets/JS/jquery-2.2.1.min.js"></script>
<input type='button' value='Get Item IDs' onclick="clickMethod();"/>

<br />

<script language="javascript" type="text/javascript">
var itemStatus ;
function clickMethod() {
    var ctx = SP.ClientContext.get_current();
    var items = SP.ListOperation.Selection.getSelectedItems(ctx);
    var myItems = '';
    var i;
    for (i in items) {
        myItems = items[i].id;
    }
    //Fetching selected item based on ID
    RetrieveListItem(myItems)

}// End of Click method


function RetrieveListItem(itemids)
    {

    var _ctx = new SP.ClientContext.get_current();
    var _List = _ctx.get_web().get_lists().getByTitle("LTI Ticket Incident"); // Enter List name
    var _camlQuery = new SP.CamlQuery();
    _camlQuery.set_viewXml("'<View><Query><Where><Eq><FieldRef Name=\'ID\'/><Value Type=\'Number\'>"+itemids+"</Value></Eq></Where></Query></View>'");
    this._ItemColl = _List.getItems(_camlQuery);
    _ctx.load(_ItemColl);
    _ctx.executeQueryAsync
    (
    Function.createDelegate(this, this.onRetrieveQuerySuccess),
    Function.createDelegate(this, this.onRetrieveQueryFailed)
    );
    }

    function onRetrieveQuerySuccess(sender, args)
    {
        var _ListItemEnumerator = _ItemColl.getEnumerator();
        while (_ListItemEnumerator.moveNext())
        {
        var _ListItem = _ListItemEnumerator.get_current();
        var updateitemid = _ListItem.get_id(); // Saving item ID to variable
        itemStatus = _ListItem.get_item('Status') // Update column
            // Validating column
            if (itemStatus == 'Assigned')
            {

                    var _ctx1 = new SP.ClientContext.get_current();
                    var _List1 = _ctx1.get_web().get_lists().getByTitle("LTI Ticket Incident"); // Enter List name
                    this._ListItem1 = _List1.getItemById(updateitemid);
                    _ListItem1.set_item('Status', 'Pending'); // Pass column and value to update column
                    _ListItem1.update();// updateing item to list

                    _ctx1.load(_ListItem1);
                    _ctx1.executeQueryAsync
                    (
                    Function.createDelegate(this, this.onUpdatedQuerySuccess),
                    Function.createDelegate(this, this.onUpdatedQueryFailed)
                    );

            }
            else
            {alert("Not assigned")}

            }
        //alert(_ListItemInfo.toString());
    }

    function onRetrieveQueryFailed(sender, args)
    {
    alert('Request failed. ' + args.get_message() +'\n' + args.get_stackTrace());
    }
       function onUpdatedQuerySuccess()
        {
        alert('Item status updated'); // Update column successful
        }

        function onUpdatedQueryFailed(sender, args)
        {
        alert('Request failed. ' + args.get_message() +'\n' + args.get_stackTrace());
        }
</script>