Here, let us look at working with SharePoint JavaScript Object Model (JSOM) operations on SharePoint framework solutions (SPFx).

Microsoft provides the packages for supporting JSOM operations. Usually in the traditional approach, JavaScript files are required for JSOM operations are MicrosoftAjax.js, SP.js, SP.runtime.js, etc. For SPFx solution, the required files can be included by installing the required typings. Read more

Microsoft SharePoint includes many built-in content types. All but one of these content types are derived from other built-in content types, and they can be organized in a hierarchy based on parentage. At the top of the hierarchy is the System content type. Next below System is the Item content type, which is derived from System and from which all other content types ultimately derive. Read more

SharePoint list throttling limits to access maximum 5000 items through view/query. However your list can hold as much as 30,000,000 items but you can’t access more than 5000 items at once by view or query. But I’ve seen scenarios where list items goes millions in a year. So accessing large list having more than 5000 items not very rare in real life. Read more