vue常用的ES6语法--class

新增加的语法糖，作用：让对象原型的写法更加清晰，更像面向对象的编程方式;构造函数的另一种写法
1、构造函数

        function Person(name,age){
            this.name = name;
            this.age = age;
        }

        Person.prototype = {
            constructor:Person,
            print(){
                console.log('我叫' + this.name + ',今年' + this.age + '岁');
            }
        }

        let person = new Person('张三',19);
        console.log(person);

2、通过class面向对象

       class Person1{
            constructor(name,age){
                this.name = name;
                this.age = age;
            }

             print1(){
                console.log('我叫' + this.name + ',今年' + this.age + '岁');
            }
        }

        let person1 = new Person1('张三',19);
        console.log(person1);
        person1.print1();