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map循环中key使用解构赋值等处理时渲染有问题 #4535

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MingNeo opened this issue Sep 25, 2019 · 3 comments
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map循环中key使用解构赋值等处理时渲染有问题 #4535

MingNeo opened this issue Sep 25, 2019 · 3 comments
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@MingNeo
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MingNeo commented Sep 25, 2019

问题描述
使用map循环时给元素加的key属性,如果使用解构赋值/lodash.get等方法取对象中id放到变量里,当列表内容变化时就会显示错乱。使用index反而没有问题。

复现步骤

image
这样会出错,列表中新增一条数据后会显示错乱,新增的item的位置上重复显示之前的项。

这样显示正常
image

image

期望行为
正常处理map循环

报错信息

[这里请贴上你的完整报错截图或文字]

系统信息

Taro v1.2 及以上版本已添加 taro info 命令,方便大家查看系统及依赖信息,运行该命令后将结果贴下面即可。

Taro CLI 1.3.17 environment info:
System:
OS: macOS 10.14.5
Shell: 5.3 - /bin/zsh
Binaries:
Node: 10.8.0 - /usr/local/bin/node
Yarn: 1.12.1 - /usr/local/bin/yarn
npm: 6.7.0 - /usr/local/bin/npm
npmPackages:
@tarojs/async-await: 1.3.17 => 1.3.17
@tarojs/components: 1.3.17 => 1.3.17
@tarojs/plugin-babel: 1.3.17 => 1.3.17
@tarojs/plugin-csso: 1.3.17 => 1.3.17
@tarojs/plugin-sass: 1.3.17 => 1.3.17
@tarojs/plugin-uglifyjs: 1.3.17 => 1.3.17
@tarojs/redux: 1.3.17 => 1.3.17
@tarojs/rn-runner: 1.3.17 => 1.3.17
@tarojs/router: 1.3.17 => 1.3.17
@tarojs/taro: 1.3.17 => 1.3.17
@tarojs/taro-h5: 1.3.17 => 1.3.17
@tarojs/taro-weapp: 1.3.17 => 1.3.17
@tarojs/webpack-runner: 1.3.17 => 1.3.17
eslint-config-taro: ^1.3.17 => 1.3.17
eslint-plugin-taro: ^1.3.17 => 1.3.17
nervjs: ^1.4.3 => 1.4.4
npmGlobalPackages:
typescript: 3.5.1

@taro-bot
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taro-bot bot commented Sep 25, 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~

@MingNeo MingNeo changed the title map循环中key map循环中key使用解构赋值时渲染有问题 Sep 25, 2019
@taro-bot taro-bot bot assigned yuche Sep 25, 2019
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taro-bot bot commented Sep 25, 2019

CC @yuche

@MingNeo MingNeo changed the title map循环中key使用解构赋值时渲染有问题 map循环中key使用解构赋值等处理时渲染有问题 Sep 25, 2019
@Chen-jj
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Chen-jj commented Jul 2, 2020

Taro3 应该没有这个问题了。

@Chen-jj Chen-jj closed this as completed Jul 2, 2020
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