JavaScript constructors are automatically executed using the New keyword

JavaScript is a lightweight and imprecise programming language with basic syntax, but although lightweight and simple, but sometimes it can get you, this is an interesting article, perhaps you have written a JavaScript function or the use of JavaScript "class" For example: var mydate = new Date (), you are familiar with the new keyword and the ability to pass function parameters via the New keyword.
Take a look at the following code:

The code is as follows	Copy Code
function MyClass () { Console.log (' initialized! '); Set A, as an example This.dirty = true; } var instance = new MyClass; >> "initialized!"

So this is what I want to tell you, I don't know what it is, just think it's interesting.