`Intl.DateTimeFormat.prototype`表示 `Intl.DateTimeFormat`构造函数的原型对象。

`Intl.DateTimeFormat.prototype` 属性的属性特性：
writable | false
enumerable | false
configurable | false

## 描述

参见 `DateTimeFormat`来看`Intl.DateTimeFormat实例的一个描述。`

`Intl.DateTimeFormat` 实例继承自`Intl.DateTimeFormat.prototype`. 对原型对象的修改都继承自`Intl.DateTimeFormat`实例。

## 属性

`Intl.DateTimeFormat.prototype.constructor`
  请参考 `Intl.DateTimeFormat`.
`Intl.DateTimeFormat.prototype.format`
  Getter; 返回一个`DateTimeFormat`对象的根据locale和格式化参数格式化日期的函数。

## 方法

`Intl.DateTimeFormat.prototype.formatToParts()`
  Returns an `Array` of objects representing the date string in parts that can be used for custom locale-aware formatting.
`Intl.DateTimeFormat.prototype.resolvedOptions()`
  返回一个新的属性对象，反射出在对象初始化过程中计算出的locale和options的各个值。

## 规范

规范版本 | 规范状态 | 注解
--- | --- | ---
ECMAScript Internationalization API 1.0 (ECMA-402) Intl.DateTimeFormat.prototype | Standard | 初始定义
ECMAScript Internationalization API 2.0 (ECMA-402) Intl.DateTimeFormat.prototype | Standard |
ECMAScript Internationalization API 4.0 (ECMA-402) Intl.DateTimeFormat.prototype | Draft |

## 浏览器兼容性

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

- Desktop
- Mobile

Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit)
--- | --- | --- | --- | --- | ---
Basic support | 24 | 29 (29) | 11 | 15 | 未实现

Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Phone | Opera Mobile | Safari Mobile
--- | --- | --- | --- | --- | --- | ---
Basic support | 未实现 | 26 | 未实现 | 未实现 | 未实现 | 未实现

## 参见

- `Intl.DateTimeFormat`