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When referencing JSOM declaratively, the first step is to register the SharePoint JSOM API as external scripts within your SharePoint Framework project. In your code editor, open the ./config/config.json file, and add the following to the externals section:
How to use CSOM in sharepoint.net framework?
In SharePoint .NET Framework CSOM, when you call a method, you build a query. Queries accumulate and are not sent to the server until ExecuteQuery is called. The following example shows the code that is required to display the website’s title. You also need to add a using statement for System.Linq.
Now we will open the config.json file which is under the config category in our spfx solution & enter the info about the custom javascript file in the externals section as shown in the below image:
When to use the JavaScript Object Model ( JSOM )?
When building SharePoint customizations, you might have used the SharePoint JavaScript Object Model (JSOM) to communicate with SharePoint. This is no longer the recommended path (see Considerations later in this article).
In the next article in this series, you’ll add JavaScript to a page on the add-in web that works with SharePoint data on the host web: Work with host web data from JavaScript in the add-in web.
Do you need Node.js V8 for SharePoint Server 2016?
That’s why if you’re building SPFx solutions for SharePoint Server 2016, you should use Node.js v8.x. This issue doesn’t impact later versions of SPFx because they’ve been updated to support HTTPs. For more information, see issue #1002 .
You can get specific information about this update in the Microsoft Knowledge Base article Update for Microsoft SharePoint Enterprise Server 2013 (KB4493137) . To start the download, click the Download button and then do one of the following, or select another language from Change Language and then click Change .