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map循环中 匿名函数传参不生效 #2990

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sprout-echo opened this issue May 8, 2019 · 3 comments
Closed

map循环中 匿名函数传参不生效 #2990

sprout-echo opened this issue May 8, 2019 · 3 comments
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@sprout-echo
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问题描述
[问题描述:map循环中 匿名函数传参不生效]

[或者可以直接贴源代码,能贴文字就不要截图]

export default class Question extends Component<Props,State> {
  onClick = (index) => {
    console.log(index)
  }
  render() {
   return(
     <View>
       {arr.map((item,index) => (
          <View key={index} onClick={() => this.onClick(index)}>
            {item}
          </View>
       ))}
    </View>  
 )
}
}

// ```js
// 代码放这里(前后的 "```" 有助 Mardown 整理代码格式和加入代码高亮)


**期望行为**
[期望可以console.log输出数据]


**报错信息**

[没有执行函数]

**系统信息**


 - 操作系统: [Windows 10]
 - Taro 版本 [1.3.0-beta.1]
 - Node.js 版本 [e.g. v9.0.0]
 - 报错平台 [ weapp]
@taro-bot
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taro-bot bot commented May 8, 2019

欢迎提交 Issue~

如果你提交的是 bug 报告,请务必遵循 Issue 模板的规范,尽量用简洁的语言描述你的问题,最好能提供一个稳定简单的复现。🙏🙏🙏

如果你的信息提供过于模糊或不足,或者已经其他 issue 已经存在相关内容,你的 issue 有可能会被关闭。

Good luck and happy coding~

@yuche yuche added the 编译器 label May 9, 2019
@taro-bot taro-bot bot assigned yuche May 9, 2019
@taro-bot
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taro-bot bot commented May 9, 2019

CC @yuche

@L-ofcourse
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规范里面有说,不能在 JSX 参数中使用匿名函数~~

@yuche yuche closed this as completed in e29ebcc May 10, 2019
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