Definition of five implementation methods in Javascript

First, let's assume that we need a say method to use one sentence, and a walk method to represent taking a step. Then let's implement the definition of the two methods in five ways.

 

1. Function say ()

{

Alert ("Hello World ");

}

Function walk ()

{

Alert ("walk ")

}

2.

VaR person = function (){};

Person. propotyoe, say = function ()

{

Alert ("Hello World ");

}

Person. Prototype. Walk = function ()

{

Alert ("walk ");

}

3. var person = {};

Person. Prototype = {

Say: function (){

Alert ("Hello World ")

}

Walk: function ()

{

Alert ("walk ");

}

}

 

4.

Function. Prototype. method = function (name, FN)

{

This. protype [name] = FN;

}

VaR person = function (){};

Person. Method ("say" function (){

Alert ("Hello World ")

})

 

Person. Method ("walk" function (){

Alert ("walk ")

})

5.

 

Function. Prototype. method = function (name, FN)

{

This. protype [name] = FN;

Return this;

}

 

VaR person = function (){};

Person. Method ("say" function (){

Alert ("hello ")

}).

Method ("walk" function (){

Alert ("walk ")

})