Summary of ways to create objects in JavaScript (4 ways)_javascript skills

The examples in this article summarize the way JavaScript creates objects. Share it with everyone for your reference, the details are as follows:

Subconsciously, JavaScript cannot be regarded as an object-oriented language. If it is, it can only be said to be a language that tends to be object-oriented. At least it does not fit well with the three most basic characteristics of object-oriented (inheritance, encapsulation, and multiplexing). state), of course many people think that JavaScript is an object-oriented language, and they seem to be right, because object-oriented can also be implemented in JavaScript. For example, inheritance and encapsulation can also be implemented in JavaScript, but is it easy to implement? ?So I feel very confused. I saw a netizen on the Internet commenting very well, "Object-oriented is just an idea, and the language can only say whether it supports object-oriented features well." If you have a certain understanding of object-oriented, you can also write object-oriented programs in C program, the same is true for javascript. So I can’t say that JavaScript is an object-oriented language. Haha, I think I’m a novice and I don’t dare to make such claims. Let’s take a look at the code:

1. Use json to create objects

var company = {};
company.name= '华为';
company.address = '北京';
company.produce = function(message)
{
 alert(message);
}

2. Use the Object type in JavaScript

company= new Object();
company.name= '淘宝';
company.address = '杭州';
company.produce= function(message)
{
 alert(message);
}

3. Generate objects by creating functions

company = function()
{
  this.name = '新浪';
  this.address = '北京';
  this.produce = function(message)
  {
  alert(message);
  }
}

4. Use the browser window object

window.name = '腾讯';
window.address = '北京';
window.produce = function(message)
{
  alert(message);
}

Extension:

1. Object copy

emptyObject = new Object();
company.apply = function(o, c,)
{
  if(o && c && typeof c == 'object')
  {
  for(var p in c)
  {
  o[p] = c[p];
  }
  }
  return o;
};
emptyObject = Ext.apply(emptyObject,company);

2. Object copy (function method)

var copyOO = new Function();
copyOO.prototype = company;
var newcopyOO = new copyOO();

I hope this article will be helpful to everyone in JavaScript programming.