JavaScript 支持情况
===================

运行限制
---------

基于安全考虑，小程序中不支持动态执行 JS 代码，即：

- 不支持使用 eval 执行 JS 代码
- 不支持使用 new Function 创建函数

客户端 ES6 API 支持情况
------------------------

微信小程序已经支持了绝大部分的 ES6 API，已支持的 API 如下（部分API依赖系统版本）：

+----------------------+------+------+-------+---------+
|        String        | iOS8 | iOS9 | iOS10 | Android |
+======================+======+======+=======+=========+
| codePointAt          |      |      |       |         |
+----------------------+------+------+-------+---------+
| normalize            | ✘    | ✘    |       |         |
+----------------------+------+------+-------+---------+
| includes             |      |      |       |         |
+----------------------+------+------+-------+---------+
| startsWith           |      |      |       |         |
+----------------------+------+------+-------+---------+
| endsWith             |      |      |       |         |
+----------------------+------+------+-------+---------+
| repeat               |      |      |       |         |
+----------------------+------+------+-------+---------+
| String.fromCodePoint |      |      |       |         |
+----------------------+------+------+-------+---------+

+------------+------+------+-------+---------+
|   Array    | iOS8 | iOS9 | iOS10 | Android |
+============+======+======+=======+=========+
| copyWithin |      |      |       |         |
+------------+------+------+-------+---------+
| find       |      |      |       |         |
+------------+------+------+-------+---------+
| findIndex  |      |      |       |         |
+------------+------+------+-------+---------+
| fill       |      |      |       |         |
+------------+------+------+-------+---------+
| entries    |      |      |       |         |
+------------+------+------+-------+---------+
| keys       |      |      |       |         |
+------------+------+------+-------+---------+
| values     | ✘    |      | ✘     |         |
+------------+------+------+-------+---------+
| includes   | ✘    |      |       |         |
+------------+------+------+-------+---------+
| Array.from |      |      |       |         |
+------------+------+------+-------+---------+
| Array.of   |      |      |       |         |
+------------+------+------+-------+---------+

+---------------+------+------+-------+---------+
|    Number     | iOS8 | iOS9 | iOS10 | Android |
+===============+======+======+=======+=========+
| isFinite      |      |      |       |         |
+---------------+------+------+-------+---------+
| isNaN         |      |      |       |         |
+---------------+------+------+-------+---------+
| parseInt      |      |      |       |         |
+---------------+------+------+-------+---------+
| parseFloat    |      |      |       |         |
+---------------+------+------+-------+---------+
| isInteger     |      |      |       |         |
+---------------+------+------+-------+---------+
| EPSILON       |      |      |       |         |
+---------------+------+------+-------+---------+
| isSafeInteger |      |      |       |         |
+---------------+------+------+-------+---------+

+--------+------+------+-------+---------+
|  Math  | iOS8 | iOS9 | iOS10 | Android |
+========+======+======+=======+=========+
| trunc  |      |      |       |         |
+--------+------+------+-------+---------+
| sign   |      |      |       |         |
+--------+------+------+-------+---------+
| cbrt   |      |      |       |         |
+--------+------+------+-------+---------+
| clz32  |      |      |       |         |
+--------+------+------+-------+---------+
| imul   |      |      |       |         |
+--------+------+------+-------+---------+
| fround |      |      |       |         |
+--------+------+------+-------+---------+
| hypot  |      |      |       |         |
+--------+------+------+-------+---------+
| expm1  |      |      |       |         |
+--------+------+------+-------+---------+
| log1p  |      |      |       |         |
+--------+------+------+-------+---------+
| log10  |      |      |       |         |
+--------+------+------+-------+---------+
| log2   |      |      |       |         |
+--------+------+------+-------+---------+
| sinh   |      |      |       |         |
+--------+------+------+-------+---------+
| cosh   |      |      |       |         |
+--------+------+------+-------+---------+
| tanh   |      |      |       |         |
+--------+------+------+-------+---------+
| asinh  |      |      |       |         |
+--------+------+------+-------+---------+
| acosh  |      |      |       |         |
+--------+------+------+-------+---------+
| atanh  |      |      |       |         |
+--------+------+------+-------+---------+

+--------------------------+------+------+-------+---------+
|          Object          | iOS8 | iOS9 | iOS10 | Android |
+==========================+======+======+=======+=========+
| is                       |      |      |       |         |
+--------------------------+------+------+-------+---------+
| assign                   |      |      |       |         |
+--------------------------+------+------+-------+---------+
| getOwnPropertyDescriptor |      |      |       |         |
+--------------------------+------+------+-------+---------+
| keys                     |      |      |       |         |
+--------------------------+------+------+-------+---------+
| getOwnPropertyNames      |      |      |       |         |
+--------------------------+------+------+-------+---------+
| getOwnPropertySymbols    |      |      |       |         |
+--------------------------+------+------+-------+---------+

+---------+------+------+-------+---------+
|  Other  | iOS8 | iOS9 | iOS10 | Android |
+=========+======+======+=======+=========+
| Symbol  |      |      |       |         |
+---------+------+------+-------+---------+
| Set     |      |      |       |         |
+---------+------+------+-------+---------+
| Map     |      |      |       |         |
+---------+------+------+-------+---------+
| Proxy   | ✘    | ✘    |       | ✘       |
+---------+------+------+-------+---------+
| Reflect |      |      |       |         |
+---------+------+------+-------+---------+
| Promise |      |      |       |         |
+---------+------+------+-------+---------+