欢迎来到Svelte教程！在这里你将学到怎么使用Svelte高效、低投入、轻松地创建任何规模的应用

Welcome to the Svelte tutorial! This will teach you everything you need to know to easily build web applications of all sizes, with high performance and a small footprint.

你还可以参考API文档或者访问playground，如果你实在等不及要开始在自己电脑上编写项目了也可以使用npx sv create创建一个项目

You can also consult the API docs and visit the playground, or — if you’re impatient to start hacking on your machine locally — create a project with npx sv create.

Svelte是什么?

What is Svelte？

简单的说Svelte是一个帮助我们创建Web应用的工具。就象其它UI框架一样，它可以让你 声明式 地编写应用，通过把标签(HTML)\样式（CSS）和行为（JavaScript）组装成的组件

Svelte is a tool for building web applications. Like other user interface frameworks, it allows you to build your app declaratively out of components that combine markup, styles and behaviours.

这些组件被 编译 成小而高效的JavaScript模块，消除了传统上与UI框架相关的开销。

These components are compiled into small, efficient JavaScript modules that eliminate overhead traditionally associated with UI frameworks.

您可以使用Svelte构建整个应用程序（例如，使用本教程将介绍的[SvelteKit]（/docs/kit）应用框架），也可以将其添加到现有代码库中。您还可以将组件作为可在任何地方工作的独立包。

You can build your entire app with Svelte (for example, using an application framework like SvelteKit, which this tutorial will cover), or you can add it incrementally to an existing codebase. You can also ship components as standalone packages that work anywhere.

怎么使用本教程

How to use this tutorial

要掌握Svelte你需要具备HTML,CSS和JavaScript基础.

本教程分为四个主要部分：

This tutorial is split into four main parts:

• Svelte基础 (当前学的就是这个)
• Svelte进阶
• SvelteKit基础
• SvelteKit进阶

在每一节我们都设计了一个针对当前知识点的练习。后面的练习依赖前面的知识点，因此我们建议你从头到尾按顺序一个一个学习。如果有需要也可以使用上面的导航选择相应的练习学习。

Each section will present an exercise designed to illustrate a feature. Later exercises build on the knowledge gained in earlier ones, so it’s recommended that you go from start to finish. If necessary, you can navigate via the menu above.

如果遇到不会做的练习，也可以点击右上角的 解答 按钮， 但尽量独立完成，最好自己找到解决方法并手动敲入完成练习，这样你会学得快一点

If you get stuck, you can click the solve button in the top right of the screen. (The solve button is disabled on sections like this one that don’t include an exercise.) Try not to rely on it too much; you will learn faster by figuring out where to put each suggested code block and manually typing it in to the editor.