data = [
            {id:1,name:'张三'},
            {id:2,name:'李四'},
            {id:3,name:'王五'}
          ]
          let item = 2
          // 使用find方法根据id查询对应对象
                let a =  data.find((ele)=>{
                    return ele.id == item
                });
                console.log(a)