合并排序不起作用 - Javascript代码：即使在调试后也无法找到错误

Question

user51

Asked: 2023-08-20 07:16:01 +0800 CST2023-08-20 07:16:01 +0800 CST 2023-08-20 07:16:01 +0800 CST

Nextjs13 错误：失败的道具类型：道具“href”需要“<Link>”中的“字符串”或“对象”，但得到“未定义”

772

我正在使用“使用服务器端渲染构建 React 应用程序”一书学习 nextjs

在此，我正在构建基本的反应应用程序，其中索引页面链接到关于页面。

该项目package.json——

{
  "name": "my-next-app",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "start": "next",
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "next": "^13.4.19",
    "react": "^18.2.0",
    "react-dom": "^18.2.0"
  }
}

pages/index.js是 -

import React from "react";
import Link from "next/link";

function MyComponent() {
  return (
    <div>
      <p>Hello from Next.js</p>
      <Link herf="/About"> <a> About</a> </Link>
    </div>
  );
};

export default MyComponent;

pages/about.js是 -

import React from "react";

function About() {
  return (
    <div>
      This is an application built using next.js to demonstrate the effectiveness of server side rendering.

    </div>
  );
}

export default About;

当我运行 npm start 时出现以下错误 -

Server Error
Error: Failed prop type: The prop `href` expects a `string` or `object` in `<Link>`, but got `undefined` instead.

This error happened while generating the page. Any console logs will be displayed in the terminal window.
Call Stack
createPropError
node_modules/next/dist/client/link.js (128:19)
createPropError
node_modules/next/dist/client/link.js (138:26)
Array.forEach
<anonymous>
forEach
node_modules/next/dist/client/link.js (135:22)
renderWithHooks
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (5658:16)
renderForwardRef
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (5842:18)
renderElement
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (6005:11)
renderNodeDestructiveImpl
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (6104:11)
renderNodeDestructive
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (6076:14)
renderNode
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (6259:12)
renderChildrenArray
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (6211:7)
renderNodeDestructiveImpl
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (6141:7)
renderNodeDestructive
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (6076:14)
renderNode
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (6259:12)
renderHostElement
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (5642:3)
renderElement
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (5952:5)
renderNodeDestructiveImpl
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (6104:11)
renderNodeDestructive
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (6076:14)
renderIndeterminateComponent
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (5785:7)
renderElement
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (5946:7)
renderNodeDestructiveImpl
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (6104:11)
renderNodeDestructive
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (6076:14)
finishClassComponent
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (5688:3)
renderClassComponent
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (5696:3)
renderElement
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (5943:7)
renderNodeDestructiveImpl
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (6104:11)
renderNodeDestructive
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (6076:14)
renderIndeterminateComponent
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (5785:7)
renderElement
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (5946:7)
renderNodeDestructiveImpl
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (6104:11)
renderNodeDestructive
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (6076:14)
renderNode
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (6259:12)
renderChildrenArray
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (6211:7)
renderNodeDestructiveImpl
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (6141:7)
renderNodeDestructive
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (6076:14)
renderElement
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (5971:9)
renderNodeDestructiveImpl
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (6104:11)
renderNodeDestructive
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (6076:14)
renderNode
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (6259:12)
renderChildrenArray
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (6211:7)
renderNodeDestructiveImpl
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (6141:7)
renderNodeDestructive
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (6076:14)
renderElement
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (5971:9)
renderNodeDestructiveImpl
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (6104:11)
renderNodeDestructive
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (6076:14)
renderContextProvider
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (5920:3)
renderElement
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (6017:11)
renderNodeDestructiveImpl
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (6104:11)
renderNodeDestructive
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (6076:14)
renderContextProvider
file:///Users/rnatarajan/Documents/Coding/others/react-ssr/c3/my-next-app/node_modules/react-dom/cjs/react-dom-server.browser.development.js (5920:3)

我检查了其他 stackoverflow 问题，但找不到解决此问题的方法。

知道如何解决这个问题吗？

1 个回答

Voted

Robin Thomas · Answer 1 · 2023-08-20T07:37:25+08:00

Best Answer

Robin Thomas

2023-08-20T07:37:25+08:002023-08-20T07:37:25+08:00

你的中有一处错字pages/index.js。是href又不是herf。

这是固定组件：

import React from "react";
import Link from "next/link";

function MyComponent() {
  return (
    <div>
      <p>Hello from Next.js</p>
      <Link href="/About"> <a> About</a> </Link>
    </div>
  );
};

export default MyComponent;

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