ES6

数组克隆

let arr = [1,2,3,4,5];

let arr1 = [...arr];

arr1 = ["a","b","c"];

arr;//[1,2,3,4,5]

arr1;//["a","b","c"]

对象克隆

let obj = {name:"tony",age:18};

let obj1 = {...obj};

obj1.age = 16;

obj;//{name:"tony",age:18}

obj1;//{name:"tony",age:16}

附ES5

仅供参考

数组的克隆

 function deepClone (event) {

  var arr = [],

    i = 0,

    len = event.length;

  for (; i < len; i++) {

    if (event[i] instanceof Array) {

      arr[i] = deepClone (event[i]);

    } else arr[i] = event[i];

  }

  return arr;

}

对象的克隆

function deepClone(obj){

    var newObj= obj instanceof Array?[]:{};

    for(var i in obj){

       newObj[i]=typeof obj[i]=='object'?

       deepClone(obj[i]):obj[i];

    }

    return newObj;

}

若有不妥之处请指正,

此外,可以搜索lodash进行深度克隆的操作

巴特西

js里的深度克隆

ES6

数组克隆

对象克隆

附ES5

数组的克隆

对象的克隆

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