Attach-File-Modal-Dialog-Sharepoint-2013

HTML Uploader :

<div id="FileUploaded"></div><a href="javascript:openpageindialog();">Attach Supporting Documents</a>

Script :

It opens the Attach File.aspx page in modal pop up.

function openpageindialog() {

    console.log(itemId);

    var options = {

                url: _spPageContextInfo.webAbsoluteUrl + '/_layouts/15/AttachFile.aspx?ListId={GUID}&ItemId='+itemId,

                title: 'Add Attachment',

                width:700,

                height: 200,

                dialogReturnValueCallback: function(result, fileAdded){

console.log(result);

                if(result == SP.UI.DialogResult.OK){

                    alert("file added");

                }

            }            

            }; 

            SP.UI.ModalDialog.showModalDialog(options);

        }