javascript - I encountered a strange problem when deploying a vue.js project locally today

Question

I copied other people's projects and was new to vue.js. I soon discovered that only one index.html file was introduced during startup. The project directory is as follows: index.html. A nodejs service was started locally (pay attention to the directory). I don't know why there is no effect on the page. . . The test is based on someone else's complete project. . . .

高洛峰 · Answer

Almost no information is given....
You can’t tell the reason just by looking at the project structure...

If it is a project on Gayhub, post the address,
Otherwise, post the src/router/index.js src/App.vue src/main.js code

伊谢尔伦 · Answer

There is no compiled js file introduced in your index.html, of course there is nothing. Usually after npm run dev, a code that introduces the compiled js file will be added below index.html. Like the picture below. You see there is nothing in your index, so it has no effect. And you see that there is nothing else except index under the same directory. It's not normal.