jd-opensource / jd-opensource/taro-ui
textarea在ios中使用表情maxlength有问题
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- TypeScript
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Description
**问题描述**

**复现步骤**
1. 新建一个文本域
2. 最大长度设置为400
3. 在文字输入到390左右的时候一直输入表情
4. 会超出文本域的最大限制还能输入
```js
// 这里可以贴代码
```
**期望行为**
maxlength对表情也有作用
**报错信息**
对表情没有效果
**系统信息**
👽 Taro v3.0.17
undefined
Taro CLI 3.0.17 environment info:
System:
OS: macOS 11.0.1
Shell: 5.8 - /bin/zsh
Binaries:
Node: 12.16.1 - /usr/local/bin/node
Yarn: 1.22.0 - /usr/local/bin/yarn
npm: 6.13.4 - /usr/local/bin/npm
npmPackages:
@tarojs/components: 3.0.16 => 3.0.16
@tarojs/mini-runner: 3.0.16 => 3.0.16
@tarojs/react: 3.0.16 => 3.0.16
@tarojs/runtime: 3.0.16 => 3.0.16
@tarojs/taro: 3.0.16 => 3.0.16
@tarojs/webpack-runner: 3.0.16 => 3.0.16
babel-preset-taro: 3.0.16 => 3.0.16
eslint-config-taro: 3.0.16 => 3.0.16
react: ^16.10.0 => 16.14.0
taro-ui: ^3.0.0-alpha.3 => 3.0.0-alpha.3
**补充信息**
Contributor guide
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