Next.js 15 Fullstack (App Router + Server Actions) · 课时

项目设置与 CLI

学习如何初始化新的 Next.js 15 项目，并使用命令行界面浏览基本项目结构

项目设置与 CLI 是 CoddyKit 上的免费 Next.js 15 Fullstack (App Router + Server Actions) 课时。这是第 1 节课，共 4 节。你可以在下方免费阅读本课时的完整内容 — 然后在浏览器中使用内置代码编辑器和全天候 AI 导师进行实践。这是 Next.js 15 Fullstack (App Router + Server Actions) 学习路径的一部分，你的进度在网页和 CoddyKit 应用中同步。 Next.js 15 Fullstack (App Router + Server Actions) 课程共包含 4 节课。

本课时的部分内容尚未翻译，以英文显示。

Next.js 15: Your First Step

Welcome to Next.js 15 — the React framework for fast, scalable, production-ready apps. First up: spinning up a project and reading its structure from the CLI.

What You'll Need

Before you start, you need Node.js 18.17 or later — it provides the JavaScript runtime, and its package manager (npm, Yarn, or pnpm) installs your dependencies.

Initializing Your Project

Spin up a new project with create-next-app — it scaffolds everything for you. Just run this in your terminal.

npx create-next-app@latest

Setup Prompts Explained

The CLI asks a few questions. The one that matters: say Yes to App Router — it's essential for Next.js 15. ESLint and Tailwind are nice; TypeScript is optional.

Navigating Your New Project

When it finishes you get a new project folder. Step into it with cd and you're ready to work.

cd my-next-app

Your Project Structure

Know the key generated files: app/ holds your pages and layouts, public/ static assets, package.json your deps and scripts, next.config.js the config.

The Core `app` Directory

The app/ directory drives the App Router: layout.js for shared UI, page.js for a route's unique view, and globals.css for global styles.

Project Scripts & `npm run dev`

Your scripts live in package.json. The one you'll use constantly is npm run dev — it starts the development server.

npm run dev

Hello Next.js!

With the dev server running, open localhost:3000 to see your app. That page is rendered by app/page.js — here's a stripped-down version.

export default function Home() {
  return (
    <main>
      <h1>Hello CoddyKit!</h1>
    </main>
  );
}

Quick Check: Setup Basics

You've learned how to kickstart a Next.js project. Let's test your knowledge!

Recap: Your First Next.js Steps

Recap: you set up Next.js 15 with create-next-app, explored the app/ directory, and launched the dev server. Next: file-system routing.

常见问题解答

「项目设置与 CLI」课时是免费的吗？

是的 — 「项目设置与 CLI」的完整文本可在网页上免费阅读。要进行交互式练习（内置代码编辑器和全天候 AI 导师）并解锁 Next.js 15 Fullstack (App Router + Server Actions) 课程的其余内容，请升级到 CoddyKit PRO。 Next.js 15 Fullstack (App Router + Server Actions) 课程共包含 4 节课。

「项目设置与 CLI」这节课中我会学到什么？

学习如何初始化新的 Next.js 15 项目，并使用命令行界面浏览基本项目结构你通过在浏览器中直接运行的动手代码来练习 Next.js 15 Fullstack (App Router + Server Actions)，全天候 AI 导师会在你学习这节课的过程中回答你的问题。

学习 Next.js 15 Fullstack (App Router + Server Actions) 需要有经验吗？

无需任何先前经验。CoddyKit 上的 Next.js 15 Fullstack (App Router + Server Actions) 课程适合初学者到高级学习者，你可以从这里开始或从头开始，按照自己的节奏学习。这是第 1 节课，共 4 节。

「项目设置与 CLI」课时需要多长时间？

大多数 CoddyKit 课程大约需要 5–10 分钟。每节课都很精短且互动，所以你能稳步进步，并在网页和应用中从离开的地方继续。

我能在这节 Next.js 15 Fullstack (App Router + Server Actions) 课中编写并运行代码吗？

能。每节 Next.js 15 Fullstack (App Router + Server Actions) 课都包含内置代码编辑器，你可以在浏览器中直接编写并运行真实代码，并获得即时 AI 反馈 — 无需本地设置。

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