1.数组深拷贝

var array = [{name: 'jack'}, 2, 3]      var newArr = array    var copyArr = [...array]     array.push({      age: 18    })    console.log(array, 'array') //changed    console.log(newArr, 'newArr') // changed    console.log(copyArr, 'copyArr') // keep origin array

2.对象深拷贝

var obj = {      name: 'gaby'    }    var newObj = obj    var copyObj = {...obj}    obj.gender = 'female'    console.log(obj, 'obj') //changed     console.log(newObj, 'newObj') // changed    console.log(copyObj, 'copyObj')  //keep origin obj