How to use new to call constructor in javascript

This article is about how to use new to call constructors in javascript. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

1. Create new objects in memory.

2. The prototype property of the new object is assigned as the property of the constructor.

3. This points to the new object of the constructor.

4. Execute the code for the constructor.

Add properties to the new object.

5. If the constructor does not return an object, it returns a new object.

Example

In addition to declaring functions, you can also write expressions / / Let Person=function (name,age) {function Person (name,age) {/ / let o=new Object (); this.name=name; this.age=age; this.sayName=function () {console.log (this.name);}; / / return o;} Person.prototype= []; let p1=new Person ("Greg", 27); console.log (Person.prototype); console.log (p1.prototype); console.log (p1) Thank you for reading! This is the end of this article on "how to use new to call constructors in javascript". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, you can share it out for more people to see!