2019獨角獸企業重金招聘Python工程師標準>>>

原型鏈繼承

<script type="text/javascript">/* 原型鏈 繼承 */function Animal(name){//parentthis.name = name || "未知";this.say = function(){console.log(this.name + " says interesting....");}}Animal.prototype.eat = function(){console.log(this.name + " can eat...");}//臨時構造函數 這里省略下方的 Dog.prototype = new F();可以替換成Dog.prototype = Object.create(Animal.prototype);function F(){}function Dog(name){//childAnimal.apply(this,arguments);}F.prototype = new Animal()Dog.prototype = new F();Dog.prototype.run = function(){console.log(this.name + " run....");}var dog = new Dog("tom");dog.say();dog.eat();dog.run(); </script>

ES6繼承

<script type="text/javascript">/* ES6 繼承 */class Parent{constructor(name){this.name = name;}say(){console.log("parent has say method. " + this.name);}}class Child extends Parent{constructor(name){super(name);}fly(){console.log("chid can fly...");}}var p = new Child("tom");p.say();p.fly(); </script>

轉載于:https://my.oschina.net/u/3229305/blog/1648517

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