静态方法 `Reflect``.ownKeys()` 返回一个由目标对象自身的属性键组成的数组。

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## 语法

    Reflect.ownKeys(target)

### 参数

`target`
  获取自身属性键的目标对象。

### 返回值

由目标对象的自身属性键组成的 `Array`。

### 异常

如果目标不是 `Object`，抛出一个 `TypeError`。

## 描述

`Reflect.ownKeys` 方法返回一个由目标对象自身的属性键组成的数组。它的返回值等同于``Object.getOwnPropertyNames`(target).concat(`Object.getOwnPropertySymbols`(target))。`

## 示例

### 使用 `Reflect.ownKeys()`

    Reflect.ownKeys({z: 3, y: 2, x: 1}); // [ "z", "y", "x" ]
    Reflect.ownKeys([]); // ["length"]

    var sym = Symbol.for("comet");
    var sym2 = Symbol.for("meteor");
    var obj = {[sym]: 0, "str": 0, "773": 0, "0": 0,
               [sym2]: 0, "-1": 0, "8": 0, "second str": 0};
    Reflect.ownKeys(obj);
    // [ "0", "8", "773", "str", "-1", "second str", Symbol(comet), Symbol(meteor) ]
    // Indexes in numeric order,
    // strings in insertion order,
    // symbols in insertion order

## 规范

Specification | Status | Comment
--- | --- | ---
ECMAScript 2015 (6th Edition, ECMA-262) Reflect.ownKeys | Standard | Initial definition.
ECMAScript Latest Draft (ECMA-262) Reflect.ownKeys | Draft |

## 浏览器兼容

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

Update compatibility data on GitHub

| Desktop | Mobile | Server
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | Safari on iOS | Samsung Internet | Node.js
`ownKeys` | Chrome Full support 49 | Edge Full support 12 | Firefox Full support 42 | IE No support No | Opera Full support 36 | Safari Full support 10 | WebView Android Full support 49 | Chrome Android Full support 49 | Edge Mobile Full support Yes | Firefox Android Full support 42 | Opera Android Full support 36 | Safari iOS Full support 10 | Samsung Internet Android Full support 5.0 | nodejs Full support 6.0.0

### Legend

Full support
  Full support
No support
  No support

## 相关链接

- `Reflect`
- `Object.getOwnPropertyNames()`