JavaScript’s built-in objects include Object, JSON, console, String, Math, Date, and the window and global objects. These are some of the most important and useful parts of the JavaScript language.

Since this new object is a JavaScript array, Arquero methods won’t work on it anymore, but conventional array methods will. Here’s an example: 'The regions are ' + region_array. join (', ') ...

JavaScript creates an XMLHttpRequest object. This object sends a request to the corresponding web server. The server processes the request and sends a response back to the browser. JavaScript reads ...

Create a variable in the JavaScript tags to initialize an ActiveX object that can run commands through a command line: Add another line inside the script tags to run a desktop application.