ES6记录

1、合并两个数组
    let a1 = [1,2,3];
    let b1 = [2,3,4];
    b1 = [...b1,...a1]//[2,3,4,1,2,3]
2、接收数据
    let obj = {
        name:"dengjie",
        nameList:[{
          name:"汤姆"
        }],
      }
　　//前面的字段必须跟返回的obj的字段名一直
     let {name:person,nameList:[{name:personName}]} = obj;
      console.log(person,personName)//dengjie 汤姆