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有效地将错误粘贴给人工智能

向人工智能提供修复漏洞所需的信息。

有效地将错误粘贴给人工智能 是 CoddyKit 上的免费 Vibe Coding 课时。 这是第 2 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 Vibe Coding 学习路径的一部分，你的进度在网页和 CoddyKit 应用中同步。 Vibe Coding 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。

Garbage In, Garbage Out

You found an error. Now you want AI to fix it. But here's the thing: AI is only as good as the context you give it.

Paste 'it's broken pls fix' and you'll get a guess. Paste the right details and tools like Cursor, Claude Code, or Copilot can nail the fix instantly.

This lesson teaches you exactly what the AI needs to fix a bug — and how to hand it over cleanly.

The Four Things AI Needs

For a great fix, give the AI these four ingredients:

  • The full error message — including the stack trace
  • The relevant code — the function or file the error points to
  • What you expected to happen
  • What actually happened

Miss any of these and the AI has to guess. Include them and it reasons like a senior engineer looking over your shoulder.

A Bad Prompt vs A Good Prompt

Compare these two. The first wastes everyone's time. The second gets a precise fix.

Notice the second one gives the error, the code, the expectation, and the reality — all four ingredients.

BAD:
"my app crashes fix it"

GOOD:
"I'm getting this error when I click Save:

TypeError: Cannot read properties of undefined (reading 'id')
    at saveUser (api.js:22:14)

Here's the saveUser function:
[paste the function]

Expected: the user gets saved.
Actual: it crashes on click. What's wrong and how do I fix it?"

Always Include the Full Error

Beginners often paste only the first line of an error. But the stack trace below it tells the AI which functions were involved and in what order.

Copy the whole red block — from the error type down through the at ... lines. In the browser console, right-click the error and choose 'Copy'. In a terminal, select and copy the full output.

More signal = better fix. The AI can ignore what it doesn't need.

Paste the Right Code, Not Everything

You don't need to dump your entire project. Give the AI the function the error points to, plus anything it directly touches.

If the error is in saveUser on line 22, paste saveUser. If saveUser uses a variable created in another function, paste that too.

In Cursor or Claude Code, you often don't even paste — you just @mention the file and the AI reads it. But knowing which file to point at is the skill.

Describe Expected vs Actual

This is the ingredient beginners skip most — and it's the most powerful. The AI can read your code, but it can't read your intentions.

Spell out both sides clearly:

"When I submit the form, I EXPECT the new task to
appear in the list below.

What ACTUALLY happens: the page goes blank and the
console shows the error below."

// This one sentence often points AI straight to the bug.

A Reusable Debug Prompt Template

Save this template. Fill in the blanks every time you hit a bug. It guarantees you include all four ingredients.

I'm building [what your app does].

When I [action that triggers it], I get this error:

[paste full error + stack trace]

Here's the relevant code:

[paste function / file]

Expected: [what should happen]
Actual: [what happens instead]

What's the cause, and what's the smallest fix?

Ask for the Cause, Not Just the Patch

A subtle upgrade: end your prompt by asking the AI to explain the cause, not only hand you new code.

If you only ask 'fix it', you might get code you don't understand — and the next bug stumps you again. Asking 'why did this happen?' teaches you as you go, and helps you catch when the AI's reasoning is off.

"Before you give me the fix, explain in one or two
sentences WHY this error happens. Then show the
smallest change that fixes it."

Reproduce It Yourself First

The strongest thing you can hand the AI is exact steps to reproduce. If you can say 'click Save with an empty name field → crash', the AI knows precisely what path the code took.

Try this snippet: it reproduces a real bug. Run it, copy the error it prints, and imagine pasting that plus the code into your AI tool.

function saveUser(user) {
  return "Saved user #" + user.id;
}

try {
  saveUser(undefined); // reproduce: no user passed
} catch (err) {
  console.log(err.name + ": " + err.message);
}

Watch Out for Secrets

One safety rule before you paste: never include API keys, passwords, or tokens in code you send to AI or share publicly.

If your error or code shows something like API_KEY="sk-abc123...", replace it with API_KEY="REDACTED" before pasting. The AI doesn't need the real secret to fix your logic.

Most tools are safe, but this is a good lifelong habit for any builder.

Put It All Together

Here's a fully filled-in example using the template — error, code, expected, actual, and a request for the cause. This is what a 'perfect' debug prompt looks like in practice.

Internalize this shape and AI tools will feel like they read your mind.

I'm building a to-do app.

When I click 'Add', I get:
TypeError: Cannot read properties of null (reading 'value')
    at addTask (app.js:9:30)

Code:
function addTask() {
  const text = document.getElementById('taskInput').value;
  list.push(text);
}

Expected: the typed task is added to the list.
Actual: nothing adds, console throws the error above.

Why does this happen, and what's the smallest fix?

Quick Check

Which prompt will get you the best, most accurate fix from an AI tool?

Recap: Hand AI the Right Context

You now know how to turn a vague 'it's broken' into a precise request. Remember to include:

  • The full error and stack trace
  • The relevant code (the function it points to)
  • Expected vs actual behavior
  • A request to explain the cause, and redact any secrets

Use the reusable template every time. Next lesson: when the error alone isn't enough, you'll learn to narrow down a bug with AI's help.

常见问题解答

「有效地将错误粘贴给人工智能」课时是免费的吗？

是的 — 「有效地将错误粘贴给人工智能」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 Vibe Coding 课程的其余内容，请升级到 CoddyKit PRO。 Vibe Coding 课程共包含 4 节课。

「有效地将错误粘贴给人工智能」这节课中我会学到什么？

向人工智能提供修复漏洞所需的信息。 你通过在浏览器中直接运行的动手代码来练习 Vibe Coding，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 Vibe Coding 需要有经验吗？

无需任何先前经验。CoddyKit 上的 Vibe Coding 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 2 节课，共 4 节。

「有效地将错误粘贴给人工智能」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 Vibe Coding 课中编写并运行代码吗？

能。每节 Vibe Coding 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。

此课程中的所有课时

  1. 理解错误信息
  2. 有效地将错误粘贴给人工智能
  3. 缩小错误范围
  4. 人工智能卡住时怎么办
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