es6之类与对象

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一、类的定义

class Parent{
constructor(name="mukewang"){
this.name=name;
}
} let v_parant=new Parent("v");
console.log("constructor",v_parant);

类的继承

// extends 用于继承父类

//继承
class Parent{
constructor(name="mukewang"){
this.name=name;
}
} class Child extends Parent{ } console.log("extend", new Child());//继承传递参数
//super必须放在设置改变参数的前面
{
class Parent{
constructor(name="mukewang"){
this.name=name;
}
} class Child extends Parent{
constructor(name="child"){
super(name);
this.type="child"
}
} console.log("extend", new Child("hello"));
}

get 、set 方法

//getter,setter
class Parent{
constructor(name="mukewang"){
this.name=name;
}
get longName(){
return "mk"+this.name
}
set longName(value){
this.name=value;
}
} let v=new Parent();
console.log("getter",v.longName);
v.longName="hello"
console.log("getter",v.longName);

静态方法

//静态方法
class Parent{
constructor(name="numewang"){
this.name=name;
} static tell(){
console.log("tell");
}
}
Parent.tell();//静态属性
class Parent{
constructor(name="numewang"){
this.name=name;
} static tell(){
console.log("tell");
}
} Parent.type="test";
console.log("静态属性",Parent.type);
}