本篇文章给大家带来的内容是关于javascript继承的实现方式（代码），有一定的参考价值，有需要的朋友可以参考一下，希望对你有所帮助。
JS中继承方式的实现有多种方法，下面是比较推荐的方法，其它继承方式可做了解：
function object(o) {
function F() {}
F.prototype = o;
return new F();
}
function inheritPrototype(subType, superType) {
var newObj = object(superType.prototype);
newObj.constructor = subType;
subType.prototype = newObj;
}
function People() {
this.cls = 'people';
}
People.prototype.say = function(name) {
name = name || this.cls;
console.log('My class is '+ name);
}
function Student() {
People.call(this);
this.type = 'student';
}
inheritPrototype(Student, People);
Student.prototype.goToSchool = function() {
console.log('I go to school every day.');
}
// 测试
var stu = new Student();
console.log('class: ' + stu.cls); // class: people
console.log('type: ' + stu.type); // type: student
stu.say(); // My class is people
stu.goToSchool (); // I go to school every day.其实，javascript 已经提供了更简单的实现方法，没必要在这造轮子，而且方法不完善，MDN 例子：
// Shape - 父类(superclass)
function Shape() {
this.x = 0;
this.y = 0;
}
// 父类的方法
Shape.prototype.move = function(x, y) {
this.x += x;
this.y += y;
console.info('Shape moved.');
};
// Rectangle - 子类(subclass)
function Rectangle() {
Shape.call(this); // call super constructor.
}
// 子类续承父类
Rectangle.prototype = Object.create(Shape.prototype);
Rectangle.prototype.constructor = Rectangle;
var rect = new Rectangle();
console.log('Is rect an instance of Rectangle?',
rect instanceof Rectangle); // true
console.log('Is rect an instance of Shape?',
rect instanceof Shape); // true
rect.move(1, 1); // Outputs, 'Shape moved.'如果你希望能继承到多个对象，则可以使用混入的方式:
function MyClass() {
SuperClass.call(this);
OtherSuperClass.call(this);
}
// 继承一个类
MyClass.prototype = Object.create(SuperClass.prototype);
// 混合其它
Object.assign(MyClass.prototype, OtherSuperClass.prototype);
// 重新指定constructor
MyClass.prototype.constructor = MyClass;
MyClass.prototype.myMethod = function() {
// do a thing
};相关文章推荐：
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