es6 class的基础语法，es6 class继承/ es5 call继承描述/使用apply比较完美继承Array的方法sort倒序排序console.table()表格生成 _console

宝剑锋从磨砺出，梅花香自苦寒来。这篇文章主要讲述es6 class的基础语法，es6 class继承/ es5 call继承描述/使用apply比较完美继承Array的方法sort倒序排序console.table()表格生成相关的知识，希望能为你提供帮助。

//基础语法
function People(name,email){ name, email } class User{ constructor(name,email){ this.name = name; this.email = email; } getinfo(){ console.log(this.name); } static description(){ console.log(\'I am description --static\'); } set urls(values){ console.log(values); this.urlsvalue = https://www.songbingjia.com/android/values; } get urls(){ return `hello urls ${this.urlsvalue}`; } }

//class 实现继承（附带es5继承方法） class Animal { constructor(name){ this.name = name; this.belly = []; } eat(food){ this.belly.push(food); } speak(){ console.log(\'I am lucky\') } }

class Dog extends Animal{ constructor(name,age){ super(name); this.age = age; } bark(){ console.log(\'bark bark!\'); } speak(){ console.log(\'bark bark I am lucky\') } } const lucky = new Dog(\'lucky\',2)console.log(lucky.speak()) //bark bark I am lucky同个方法会覆盖父类方法

// es5的继承方式比较复杂 // start // function Dog(name,age){ //Animal.call(this,name,age); //在子类的构造函数当中，首先会调用基类的构造函数，es6中直接super()即可。 //this.name = name; //this.age = age; // } // Dog.prototype = new Animal(); //Dog原型对象被指向Animal的实例，constructor会被改变，所以需要下面声明下construcor 指向Dog // Dog.prototype.constructor = Dog;

// end

//es6完美继承Array的方法 start
class MyArray extends Array{
constructor(){
super();
}
}
const colors = new MyArray();
【es6 class的基础语法，es6 class继承/ es5 call继承描述/使用apply比较完美继承Array的方法sort倒序排序console.table()表格生成】colors[0] = \'red\';
console.log(colors.length);
colors.length = 0;
console.log(colors[0]);
//完美继承Array的方法 end

class movieCollection extends Array{ constructor(name,...values){ super(...values); this.name = name } topRated(limit = 10){ return this.sort((a,b) => (a.scores > b.scores) ? -1:1).slice(0,limit); //倒序排序 } } const movies = new movieCollection(\'Leo\', {name:\'功夫熊猫\',scores:8.7}, {name:\'Gongfu\',scores:9.7}, {name:\'trjei\',scores:10}, ) movies.push({name:\'ddddd\',scores:4})console.table(movies.topRated()) //会生成一个倒序表格，牛逼了