router.beforeEach(async (to, from, next) => {这行代码报以下错误 Unexpected space before function parentheses space-before-function-paren,保存的时候,,默认就是有空格的,为什么还会报该错误
时间: 2024-03-05 09:53:41 浏览: 11
这是因为 ESLint 是一种代码风格检查工具,它会根据你的配置来检查代码是否符合预设的风格规范。在这种情况下,它检测到你的代码在函数的左括号前面有一个空格,而这违反了常见的 JavaScript 代码风格。
虽然你在保存代码时没有加入空格,但是你的编辑器可能会自动为你的代码添加空格,以保持一致的缩进风格。为了避免这个错误,你可以在编辑器中设置一个配置项,以确保在编辑时不会自动添加空格。或者你可以将 ESLint 的配置修改为允许在函数左括号前添加空格,例如:
```
"space-before-function-paren": ["error", "always"]
```
这样,ESLint 就不会再报告 "space-before-function-paren" 错误了。不过,这种做法不被推荐,因为它违反了 JavaScript 的常见代码风格。
相关问题
router.beforeEach(async (to, from, next) => {这行代码报以下错误 Unexpected space before function parentheses space-before-function-paren,请分析原因
这个错误提示是 ESLint 提供的,它检查到了在这行代码中函数的左括号前面有空格。这个错误通常是由于代码风格不一致引起的。
在 JavaScript 中,通常推荐在函数的左括号前不加空格,这是一种常见的代码风格。因此,为了避免这个错误,你可以将这行代码改为:
```
router.beforeEach(async (to, from, next) => {
```
这样就不会再出现 "space-before-function-paren" 的错误提示了。
router.beforeEach((to, from, next)
As an AI language model, I cannot access or modify the code you provided. However, I can explain what the code does.
`router.beforeEach` is a navigation guard in Vue Router that is executed before each navigation. It takes three arguments:
1. `to`: The target Route Object being navigated to.
2. `from`: The current Route Object where the navigation is coming from.
3. `next`: A callback function that must be called to resolve the navigation. The function has three possible calls:
- `next()`: Proceeds with the navigation to the target route.
- `next(false)`: Aborts the navigation.
- `next(path)`: Redirects the navigation to the specified path.
By using `router.beforeEach`, you can add custom logic to authenticate or validate the user, restrict access to certain routes, or modify the target route.