Do you need to perform an Ajax file upload with pure JavaScript? This example lays out the steps to accomplish an Ajax file upload without the need for a JavaScript library like jQuery or Dojo.

At the heart of JavaScript’s asynchronous connection-handling are “promises,” which provide a new way of scheduling how your code will work with JavaScript APIs and functions.

Speaking of the former, the post says: "Blazor 0.4.0 makes it easy to call sync and async .NET methods from JavaScript. For example, you might call back into .NET when a JavaScript callback is ...

This example, using the JavaScript-like syntax, defines a function called GetNamePart that returns a string; the GetNamePart function also expects to be passed a Customer object (in a parameter called ...