In this article I would like to explain how to write code to perform basic operations using the JavaScript client object model in SharePoint 2013.
You can use the SharePoint client object model to retrieve, update and manage data in SharePoint 2013. SharePoint makes the object model available in the following forms:
This article shows how to perform basic operations using the JavaScript object model. You can add a reference to the object model using HTML <script> tags.The following sections describe tasks that you can complete programmatically and they include JavaScript code examples that show the operations.Procedure
After adding a JavaScript file, this file is available in the SharePoint Site Assets Folder.Go to the SP site Page and add a New page to the SharePoint site.After adding a page select an Insert button in the Ribbon Menu.Then add a Content Editor Web part into the page.
Edit the WebPart and add a JavaScript file link to the content link.
Save the web part and save the page in the site. Click the button!List Created Successfully.
Source Code
SharePoint 2016 Document Libraries - End User Training Manual