vue3 启动 Getting a value from the `props` in root scope of `<script setup>` will cause the value to lose reactivity报错
时间: 2023-12-04 13:47:40 浏览: 183
引用和提到,在Vue 3中,如果在`<script setup>`的根作用域中从`props`中获取一个值,这个值将失去响应性。这是因为在`<script setup>`中,Vue 3使用编译时的静态编译来提高性能,而不像Vue 2那样使用运行时的响应式系统。为了解决这个问题,你可以使用`ref`函数将`props`中的值转换为响应式对象,如下所示:
```javascript
import { ref } from 'vue';
export default {
props: ['myProp'],
setup(props) {
const myPropValue = ref(props.myProp);
// 使用myPropValue进行后续操作
return {
myPropValue
};
}
}
```
引用提到的报错`TypeError Cannot read properties of undefined (reading 'apply')`与Vue 2升级到Vue 3的路由动态授权和异步加载相关。这个错误通常是由于Vue Router的版本不兼容或配置不正确引起的。你可以尝试升级Vue Router的版本,或者检查动态授权和异步加载的相关代码是否正确配置和使用。如果问题仍然存在,你可以提供更多的代码和错误信息以便进行更详细的分析和解决。<em>1</em><em>2</em><em>3</em>
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