//数组对象 const people = [ {name:Henry,age:20}, {name:Bucky,age:25}, {name:Emily,age:30}, ]; // 需求,取第一个age // es5 var age = people[0].age; console.log(age)//20 // es6解构 const [age] = people; /** * 因为第一层解构的是数组,所以会返回第一条的整条数据 */ console.log(age)//{ name: Henry, age: 20 } /** * 如果想拿第一条数据的age值就得再解构一次 */ const [{age}] = people; console.log(age)//20
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