uniapp 看别人的代码组件全部都不用 v-if 控制,都是默认显示的,经常出现难以排查的错误 - V2EX
6c9fd

uniapp 看别人的代码组件全部都不用 v-if 控制,都是默认显示的,经常出现难以排查的错误

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  •   6c9fd Nov 15, 2024 2830 views
    This topic created in 544 days ago, the information mentioned may be changed or developed.

    排查了两小时,最后改成 v-if 就正常了,好多项目都这样,加个 v-if 又不会怎么样,又没有老哥解释下为什么很多人喜欢这么写

    9 replies    2024-11-16 14:48:50 +08:00
    tangping
        1
    tangping  
       Nov 15, 2024 via iPhone
    zdxslwy
        2
    zdxslwy  
       Nov 15, 2024
    因为你不知道别人的代码是在怎样的工期下写出来的
    dapang1221
        3
    dapang1221  
       Nov 15, 2024
    写 react 写的
    shintendo
        4
    shintendo  
       Nov 15, 2024   1
    没看懂,什么叫“不用 v-if 控制,都是默认显示的”
    ivslyyy
        5
    ivslyyy  
       Nov 15, 2024
    @shintendo 估计是很多视图组件,接受了外部变量,没有加 v-if 判断空的情况,直接使用,会造成无法在空对象下访问字段的情况。这种代码,在乱七八糟写的时候,而且后端接口也可能乱七八糟变化的时候,就很容易出错白屏。
    duanxianze
        6
    duanxianze  
       Nov 15, 2024
    除了改工期或者纯粹的菜之外没有别的可能,这绝对不是推荐的写法
    Curtion
        7
    Curtion  
       Nov 15, 2024
    组件依赖异步数据做首次渲染,使用 v-if 控制组件的渲染时机?
    shintendo
        8
    shintendo  
       Nov 15, 2024
    @ivslyyy 这种看报错很容易定位吧
    benzlucy
        9
    benzlucy  
       Nov 16, 2024
    因为组件是否显示 能出什么样的难以排查的错误啊?
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