javascript - 拼接对象的属性？

Question

是否有实用程序(jquery、lodash 等)可以将属性从一个对象提取到另一个对象，然后从原始对象中删除它们？类似于Array的拼接？

obj1 = {color:"red", age:"23", name:"cindy"}
obj2 = extract(obj1, ["color","name"])

结果:

obj1 is { age:23 }
obj2 is {color:"red", name:"cindy"}

Answer 1

您可以使用一个函数来迭代键并返回一个新的 objectc 并从源对象中删除键。

function extract(object, keys) {
    return keys.reduce(function (o, k) {
        o[k] = object[k];
        delete object[k];
        return o;
    }, {});
}

var obj1 = { color: "red", age: "23", name:"cindy" },
    obj2 = extract(obj1, ["color","name"]);
    
console.log(obj1);
console.log(obj2);