last time we talked about a simple inheritance, this time let's talk a little more complicated, that is, let the subclass inherit the properties and methods of the parent class, assuming that the person is the parent class, the worker (worker) is a subclass, and let the worker inherit the properties and methods of people:
Parent class:
function Person (name,age)
{
This.name=name;
This.age=age;
}
person.prototype.showname=function ()
{
alert (this.name);
}
function Worker (Name,age,job)
{
Person.call (this,name,age)//This is where the call method inherits the Name property of the person and the Age method
Worker.job=job;
}
worker.prototype=new person ()//through New person (), returns a person object with the ShowName method, so, The worker class inherits the ShowName method of the person class .
worker.prototype.showjob=function ()
{
alert (this.job)
}
var ow=worker (' Kate ', ' 23 ', ' Handyman ');
alert (ow.name)//This place, set the Name property to the worker, but added the name attribute to his parent, but still pops up Kate, which means he inherits the parent's Name property
alert (ow.age)//This place also inherits the age property of the parent
ow.showname ()//can be executed, indicating the method that inherits the person
ow.showjob ()//Only the worker class has this method, the person class does not have
we have nothing to understand, who can ask the question ha
