vue app全局变量

在Vue中，可以通过在`.env`文件中设置全局变量，然后在项目中使用`process.env`对象来获取这些变量的值。比如，在`.env`文件中设置了`VUE_APP_BASE_URL = 'https://www.baidu.com'`，那么在Vue项目中可以通过`process.env.VUE_APP_BASE_URL`来获取该全局变量的值。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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