es6简化代码

一、解构赋值

//对象
const course = {
	name:'es6',
	price: 200
	};
   //按照正常写法，我们会这样来写
	// const name = course.name;
	// const price = course.price;
	
	//es6的简单写法
	const {name,price} = course;
	console.log(name,price)	
//数组
const courseArr = ['es6','es7','es8']
	// const a = courseArr[0]
	// const b = courseArr[1]
	// const c = courseArr[2]
	
	const [a,b,c] courseArr
	console.log(a,b,c)

//复杂的对象
	const course = {
		name1:'es6',
		price: 200,
		teacher:{
			name:'mack',
			age:18
		}
	};
	const {
		name1,
		price,
		teacher:{
			name,age
		}
	} = course
	console.log(name1,price,name,age)