在vue项目里面设置环境变量，Vue3中如何定义一个全局组件

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globalProperties

添加可从任何组成部分示例中获取的全球概况。当出现姓名纠纷时,该组成部分优先。

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当我们希望在组件中给 http 调用时, 我们必须使用 GeneralInstance () 。

我不知道这是否是一个好的概念, 但它是。即当前实例。然而,应当指出,Ctx而不是它只涉及发展阶段。如果项目被包装并安装到生产服务器上,就会出错，ctx 无法获得路线和全球挂载物体。这一问题的答案是使用代理而不是ctx。代码参考如下。

注:在美国,Vue3建议使用依赖性注射:供应和注射,原因是 vue/rfcs。 以下职位将介绍给你。

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