javascript - 使用删除时的javascript奇怪

Question

所以...

var outObj = people[0];
outObj.oAuthID = null;
delete outObj.oAuthID;

给我...

{
  "uuid": "39b2b45f-1dde-4c9a-8765-1bc76f55848f",
  "oAuthID": null,
  "date": "2013-10-21T16:48:47.079Z",
  "updated": "2013-10-21T16:48:47.079Z",
  "id": "52655aefcc81bb9adc000001"
}

但是这个...

function clone(obj) {
    // Handle the 3 simple types, and null or undefined
    if (null == obj || "object" != typeof obj) return obj;

    // Handle Date
    if (obj instanceof Date) {
        var copy = new Date();
        copy.setTime(obj.getTime());
        return copy;
    }

    // Handle Array
    if (obj instanceof Array) {
        var copy = [];
        for (var i = 0, len = obj.length; i < len; i++) {
            copy[i] = clone(obj[i]);
        }
        return copy;
    }

    // Handle Object
    if (obj instanceof Object) {
        var copy = {};
        for (var attr in obj) {
            if (obj.hasOwnProperty(attr)) copy[attr] = clone(obj[attr]);
        }
        return copy;
    }

    throw new Error("Unable to copy obj! Its type isn't supported.");
}

var outObj = clone(people[0]);
outObj.oAuthID = null;
delete outObj.oAuthID;

给我...

{
  "uuid": "39b2b45f-1dde-4c9a-8765-1bc76f55848f",
  "date": "2013-10-21T16:48:47.079Z",
  "updated": "2013-10-21T16:48:47.079Z",
  "id": "52655aefcc81bb9adc000001"
}

我真的不想每次都克隆所有内容，只是为了从我的结果中隐藏一个属性。这是怎么回事？这是怎么回事？如何修复它以“正常”工作？

Answer 1

我很想知道您是否在多个浏览器中测试过此代码，因为它们与delete操作员的行为不一致。https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/delete#Cross-browser_issues

要尝试的一件事是删除属性，就好像对象是一个数组一样。

delete outObj['oAuthID'];

它应该给出更一致的行为。