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A new method for creating javascript objects: Object. create (). javascript creates objects.

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A new method for creating javascript objects: Object. create (). javascript creates objects.

What is Object. create?
Object. create (proto [, propertiesObject]) is a new object creation method proposed in E5. the first parameter is the prototype to be inherited. If it is not a subfunction, you can pass a null parameter. The second parameter is the object's attribute descriptor. this parameter is optional.
For example:

function Car (desc) {  this.desc = desc;  this.color = "red";} Car.prototype = {  getInfo: function() {   return 'A ' + this.color + ' ' + this.desc + '.';  }};//instantiate object using the constructor functionvar car = Object.create(Car.prototype);car.color = "blue";alert(car.getInfo());

Result:A blue undefined.

1. Detailed description of the propertiesObject parameter: (both are false by default)
Data attributes:

  • Writable: whether the data can be written at will
  • Retriable: can it be deleted or modified?
  • Enumerable: can be used for in enumeration?
  • Value: value

Access attributes:

  • Get (): Access
  • Set (): set

2. Example: You can see how to use it directly.

<!DOCTYPE html>

Result:
100
Yupeng
Yupeng1
201
I am returning: YUPENG
A blue porsche boxter.
A blue XXXXXXXX.
Aaaaaa


The above is a detailed introduction to Object. create (), a new method for creating javascript objects. I hope it will help you learn more.

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