In this example, the JavaScript file upload target is an Apache Web Server. As a result, the server-side component that handles the Ajax request will be written in PHP. If a Tomcat or Jetty server was ...

For example, using closures along with higher-order functions used to be the only way we could have “private” or tamper-proof variables in JavaScript: let protectedObject = (function() { ...

The above example may seem trivial and not very useful, and I grant that’s true in most cases, but it does demonstrate the use of a function as data. Let’s move on to implement a data ...