The difference between JavaScript object-oriented and traditional object-oriented

1. JavaScript's object-oriented is prototype-based;

2. JavaScript is a function to represent the class, but this function can use this, you can declare properties and methods inside;

You can also say upside down, if a common function uses the This keyword, then this function is a class, it must be called in the form of an object;

3. The so-called object is actually a constructor (like a normal function) plus a new keyword,

If there is no new keyword, then this constructor is a normal function. In the Declaration of objects, JavaScript is the same as the traditional object-oriented;

4. The member property in the JavaScript class is private to all objects, which is the same as the traditional object-oriented, that is, the member property belongs to the object;

5. The Member method of JavaScript is also private, that is, each object will save the independent member method in memory, so its member method is also private, belongs to the object;

6. The traditional object-oriented member methods belong to the entire class, and each object has the same reference address to the member method, that is, the method is shared for all objects;

7. JavaScript introduces a "prototype" approach that implements similar functionality as traditional object-oriented. Because one of the biggest features of "prototypes" is "sharing."

This article is from the "Everything Possible" blog, please be sure to keep this source http://noican.blog.51cto.com/4081966/1629900

The difference between JavaScript object-oriented and traditional object-oriented