SvelteKit 允许你创建的不仅仅是页面。我们还可以通过添加导出与 HTTP 方法对应的函数的 +server.js 文件来创建 API 路由：GET、PUT、POST、PATCH 和 DELETE。

¥SvelteKit allows you to create more than just pages. We can also create API routes by adding a +server.js file that exports functions corresponding to HTTP methods: GET, PUT, POST, PATCH and DELETE.

当你单击按钮时，此应用从 /roll API 路由获取数据。通过添加 src/routes/roll/+server.js 文件创建该路由：

¥This app fetches data from a /roll API route when you click the button. Create that route by adding a src/routes/roll/+server.js file:

export function GET() {
	const number = Math.floor(Math.random() * 6) + 1;

	return new Response(number, {
		headers: {
			'Content-Type': 'application/json'
		}
	});
}

单击按钮现在可以正常工作。

¥Clicking the button now works.

请求处理程序必须返回 响应 对象。由于从 API 路由返回 JSON 很常见，因此 SvelteKit 提供了一个方便的函数来生成这些响应：

¥Request handlers must return a Response object. Since it’s common to return JSON from an API route, SvelteKit provides a convenience function for generating these responses:

import { json } from '@sveltejs/kit';

export function GET() {
	const number = Math.floor(Math.random() * 6) + 1;

	return new Response(number, {
		headers: {
			'Content-Type': 'application/json'
		}
	});
	return json(number);
}