JS class method, object method, prototype understanding (RPM)

function people (name)
{
This.name=name;
//Object Methods
This . Introduce=function () {
alert ("My name is" +this.name);
}
}
//class method
people.run=function () {
alert ("I can Run");
}
//Prototyping method
people.prototype.introducechinese=function () {
alert ("My name is" +this.name);
}


//Test

var p1=new people ("windking");

P1. Introduce ();

People.run ();

P1. Introducechinese ();

1, object method Understanding is very simple, mainly if the class generates an instance, then the instance can use the method
2, class method, do not need to generate an instance of the method that you can use
3, the prototype method is mainly used to extend the JS existing system objects, such as array array there is no method, you can add a prototype method, then the created array has the method.

1, the object method includes the method in the constructor function and the method of the constructor prototype;
2, class method, in fact, the class here is a function, in JS because the function is also an object, so you can add properties and methods for the function, this method in node with more;
3, the prototype method is generally used for object instance sharing, such as Person.prototype.sayname=function () {console.log (this.name);} , adding this method to the prototype will enable sharing. This makes it necessary to allocate the appropriate memory for each instance when it is initialized.

JS class method, object method, prototype understanding (RPM)