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...

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在我的结果中隐藏一个属性。这是怎么回事？这是怎么回事？我怎样才能修复它以“正常”工作？

Answer 1

我很想知道您是否在多个浏览器中测试过这段代码，因为它们给出了与 delete 运算符不一致的行为。 https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/delete#Cross-browser_issues

尝试的一件事是删除属性，就好像对象是一个数组一样。

删除 outObj['oAuthID'];

它应该提供更一致的行为。