Object-oriented javascript Learning

1. Factory Model
Function showColor (){
Alert (this. color );
} // Ensure that this function has only one backup

Function createCar (){
Var tmpCar = new Object;
TmpCar. color = "red ";
TmpCar. name = "fff ";
TmpCar. showColor = showColor;
Return tmpCar;
}

Var car1 = createCar ();
Var car2 = createCar ();
2. constructor Method
Function Car (){
This. color = 1;
This. name = "f ";
}
Var car = new Car ();
3. Prototype
Function Car (){
}
Car. prototype. color = 12;
Car. prototype. drivers = new Array (1, 2 );

Var car1 = new Car ();.
Var car2 = new Car ();
Car1.drivers. push (3 );
Then, the drivers of two cars will change to 1, 2, and 3 because the two share an array address. The constructor cannot be passed in.

4. Mixed constructor and prototype
Use constructor to construct properties use prototype to construct shared Functions
Function Car (parameter ){
This. color = xxx;
This. name = xxx;
}
Car. prototype. show = function (){
Xxxx
}

5. Traditional programmers of oop have a dynamic prototype method.
Function Car (){
This. color = xxx;
This. name = xxx;
This. drivers = new Array (aa, bb );
If (typeof Car. _ initialized = "undefined "){
Car. prototype. show = function (){
Xxxxxs
}
}
Author: carmazhao