开始研究 Javascript 中的原型。我想知道是否可以更改（改进\以不同的方式）该代码。对不起我的英语（shell提示符）。那只是为了我。我会欢迎任何建议。没有意义的代码功能。它的主要结构（继承，对象的交互）。我正在以正确的方式前进？
第一的
function extend(Child, Parent) {
var F = function() { }
F.prototype = Parent.prototype;
Child.prototype = new F();
Child.prototype.constructor = Child;
Child.superclass = Parent.prototype;
}
function Human() {
}
Human.prototype = {
can_speak: true,
gender: 'sex',
say_hello: function() {
console.log(this.name+' say hello!');
},
constructor: function(name,age) {
this.name = name;
this.age = age;
},
whoami: function() {
console.log('My name - '+this.name+'. My gender - '+this.gender+'. My age - '+this.age);
}
}
function Man(name,age) {
this.gender = 'male';
this.power = 50;
this.poke = function() {
console.log(this.name+' - I`m a man!!!');
}
Man.superclass.constructor.call(this, name,age);
}
function Woman(name,age) {
this.gender = 'female';
this.power = 30;
this.give = function() {
console.log(this.name+' - I`m give to someone(((');
}
Woman.superclass.constructor.call(this, name,age);
}
function Boy(name,age, main) {
Boy.superclass.constructor.call(this, name,age);
this.main = main;
}
function Oldman(name,age) {
Oldman.superclass.constructor.call(this, name,age);
}
function Girl(name,age) {
Girl.superclass.constructor.call(this, name,age);
}
function Oldwoman(name,age) {
Oldwoman.superclass.constructor.call(this, name,age);
}
extend(Man, Human);
extend(Woman, Human);
extend(Boy, Man);
extend(Oldman, Man);
extend(Girl, Woman);
extend(Oldwoman, Woman);
Stella = new Girl('Stella', 17);
John = new Boy('John', 18, 'trolling');
John.poke();
console.log(John);
第二
function Man(name) {
this.name = name;
this.age = 20;
this.band_name = '';
this.band = '';
console.log(this.name+' was created');
}
Man.prototype = {
say_hello: function() {
return 'Hello from '+this.name;
},
rename_band: function(new_name) {
console.log(this.name+' was renamed his band '+this.band_name+' to '+new_name);
this.band.name = new_name;
this.band.members.forEach(function(e) {
e.band_name = new_name;
});
},
rename: function(new_name) {
console.log(this.name+' was renamed to '+new_name);
this.name = new_name;
}
}
function band(name) {
this.name = name;
this.members = new Array();
}
band.prototype = {
add: function() {
c = arguments.length;
for(i=0; i<c;i++) {
arguments[i].band_name = this.name;
arguments[i].band = this;
console.log(arguments[i].name+' was invited to '+this.name);
this.members.push(arguments[i]);
}
},
change_name: function(new_name) {
console.log('Band '+this.name+' was renamed to '+new_name);
this.name = new_name;
this.members.forEach(function(e) {
e.band_name = new_name;
});
},
remove_member: function(member_name) {
c = this.members.length;
for(i=0; i<c; i++) {
n = this.members[i].name;
if(n == member_name) {
console.log(n+' was remove from the '+this.name);
this.members[i].band_name = '';
this.members[i].band = '';
this.members.splice(i, 1);
return;
}
}
console.log(member_name+" wasn't found in "+this.name);
},
split: function(reason) {
c = this.members.length;
this.members.forEach(function(e) {
e.band = '';
e.band_name = '';
});
this.members.splice(0, c);
console.log('Band '+this.name+' was splited. Reason - '+reason);
},
print: function() {
str = 'Band - '+this.name+'. Members:';
this.members.forEach(function(e) {
str += e.name+'('+e.age+'); ';
});
console.log(str);
}
}
var Davy = new Man('Davy');
var John = new Man('John');
var Alex = new Man('Alex');
var hardcore = new band('hardcore');
hardcore.add(Davy, John, Alex);
hardcore.change_name('deathcore');
hardcore.print();
hardcore.remove_member('Davy');
John.rename_band('lol');
hardcore.add(Davy);
Davy.rename('Joshua');
hardcore.print();
hardcore.split('bad guitarist');