What problems did you encounter when working on Vue projects?

In the process of using Vue to do projects, you may encounter the following problems:

1. Component communication issues

In Vue projects, components are very important. An important concept, communication between components is also a big issue. When components are deeply nested, sometimes the parent component needs to pass data to the child component or sibling component, or the child component also needs to pass data to the parent component. At this time we can use props and emit to transfer data between parent and child components.

2. Cross-domain issues

After the Vue project is completed and deployed to the server, cross-domain issues may occur. This is caused by the browser's same-origin policy. To solve cross-domain problems, you can configure CORS on the backend or use a proxy on the frontend. For the front-end to use a proxy to solve cross-domain problems, we can use the proxyTable in vue-cli for configuration.

3. Vue-cli version issue

When using vue-cli scaffolding to build a Vue project, we need to pay attention to the Vue-cli version issue. Different versions of Vue-cli may use different versions of Webpack, which may cause some compatibility issues. When installing Vue-cli, we can use npm i -g vue-cli to install it globally.

4. State management issues

In large Vue projects, state management is also a very important issue. Vue itself provides vuex for state management, but if vuex is used in inappropriate scenarios, the project structure will be complex and difficult to maintain. If it is not a large project, you can use Vue's $emit and $on methods as well as $attrs and $listener for simple state management.

5. Project performance optimization

The performance of the Vue project is also an issue that needs attention. In the process of using Vue, we can adopt some optimization solutions, such as lazy loading of routes, asynchronous loading of components, using ES6 import and export syntax, etc. In addition, optimizing image compression and reducing DOM operations are also important means to improve the performance of Vue projects.

In short, when using Vue for projects, we need to pay attention to the above issues, constantly optimize the code structure and project performance, improve project development efficiency and user experience, and let the Vue project serve us better.

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