2.9.5 ext JS object type processing and convenient methods

JavaScript Of Object object type

Object Constructor creates an object wrapper for the given value . If the value is null Or undefined , It will create and return an empty object , otherwise , It will return an object of the type corresponding to the given value .
The structure is similar to ：

var o = new Object(undefined);
var o = new Object(null);

create ( proto, [propertiesObject] ) : Object STATIC

Create a new object with the specified prototype and attributes .
For example look ：
There is a graphic class Shape, There are two properties x,y They represent horizontal and vertical coordinates respectively ：

function Shape() {
  this.x = 0;
  this.y = 0;
}

to Shape Add a prototype method - move(), Used to move the figure ：

Shape.prototype.move = function(x, y) {
    this.x += x;
    this.y += y;
    console.info("Shape moved.");
};

Define a rectangular function , call Shape.

function Rectangle() {
  Shape.call(this); 
}

Here we are , The preparations are over , Next call Object.create() .
Rectangle.prototype