Delete a list items using JavaScript library code in SharePoint 2013

Would like to delete 13000+ records from the list in SPO.
SCRIPT  BEGIN
var itemId;
var oListItem;
 $(document).ready(function() {
SP.SOD.executeFunc('sp.js', 'SP.ClientContext', sharePointReady);

    });

function sharePointReady(){
    var clientContext = new SP.ClientContext("XXX");
    var oList = clientContext.get_web().get_lists().getByTitle('Workflow History');
for LOOP
{
    this.oListItem = oList.getItemById(itemId);
    oListItem.deleteObject();

    clientContext.executeQueryAsync(
        Function.createDelegate(this, this.onQuerySucceeded),
        Function.createDelegate(this, this.onQueryFailed)
    );
}
}
SCRIPT END
https://msdn.microsoft.com/en-us/library/office/jj163201.aspx#BasicOps_SPListItemCRUD

How to exclude a list from search results

https://social.technet.microsoft.com/Forums/sharepoint/en-US/f53ec882-333e-4061-941d-18722952871b/exclude-lists-from-search-results

SharePoint 2013 has Out-of-box "Word to PDF Conversion". With "Print to PDF"

SharePoint 2013 has another awesome feature that lets Out-of-box "Word to PDF Conversion". With "Print to PDF"
http://www.learningsharepoint.com/2012/10/15/word-to-pdf-conversion-in-sharepoint-2013-via-print-to-pdf/
It doesn't work if you apply IRM feature on the document library.

SPEasy Form for SharePoint List customization.

Customizing list form is part of daily job. Got a new tool over internet to customize the form in a simple way.
Have a look @ http://speasyforms.com/

How to check logs using Correlation ID in SharePoint 2013 Online environment

Recently for one of my application, got some issue and we have Correlation ID. We contact the MS support team for the reason.
Most of the issue might solve by viewing the logs.But in SP Online we can't find the root cause by our self for the problem.

Got the shocking info from them.
http://community.office365.com/en-us/f/148/t/155804.aspx

Vertical Promoted Links in SharePoint 2013

Nice Tip of the day!
http://davidlozzi.com/2014/08/15/vertical-promoted-links-in-sharepoint-2013/

Client-side rendering links

https://code.msdn.microsoft.com/office/Client-side-rendering-JS-2ed3538a
http://www.connectorman.com/jslink-code-kpis-sharepoint-2013-2/
http://www.sharepointnutsandbolts.com/2013/01/using-jslink-to-change-ui-of-sharepoint_20.html

Branding links

https://samlman.wordpress.com/2015/03/01/using-dreamweaver-and-design-manager-with-sharepoint-2013/

https://chrisstahl.wordpress.com/2013/09/29/design-manager-in-sharepoint-part-iii/
http://www.sharethepoint.no/?p=528

Error occurred in deployment step 'Install app for SharePoint': Failed to install app for SharePoint

Have tried to deploy basic sharepoint hosted app on my brand new SP 2013 VM.
Got the below error.

Solution:
Follow the steps from the below URL
http://www.codeproject.com/Articles/515677/MyplusFirstplusSharepoint-HostedplusAppplusinplus

http://www.ashokraja.me/post/Develop-SharePoint-2013-Napa-App-In-Local-Dev-Environment-Configuring-On-Premises-without-DNS.aspx

Configuring an Environment for Apps in SharePoint 2013

Today got the chance to look into the configuration of the apps enviromnet in SP 2013.
Bellow is the reference of the configuration link.
http://community.bamboosolutions.com/blogs/sharepoint-2013/archive/2013/12/11/user-s-guide-to-configuring-an-environment-for-apps-in-sharepoint-2013-part-1-how-to-configure-the-domain-names-in-dns.aspx

KnockOut JS tutorial

Recently got the chance to take the training program from http://code.tutsplus.com/courses/one-two-knockout/ on KNOCKOUT JS
Following are the couple of useful links

http://knockoutjs.com/documentation/introduction.html

http://www.knockmeout.net/2011/04/utility-functions-in-knockoutjs.html

In SharePoint 2013 apps development would like to use knockout js and find the below useful link to integrate knockout in SP2013.

http://www.dotnetcurry.com/showarticle.aspx?ID=1041
http://www.ashokraja.me/post/Introducing-KoSp-Knockout-binding-handlers-for-SharePoint-2013-and-2010-Rest-API-and-SPServices.aspx
Use Knockout.js and the REST service to display list data