# Page Not Found

The URL `graphql/basic/apollo-explorer` does not exist. This page may have been moved, renamed, or deleted.

## Suggested Pages

You may be looking for one of the following:
- [Const vs Let vs Var](https://huy312100.gitbook.io/software-development/javascript/basic/const-vs-let-vs-var.md)
- [Overflow](https://huy312100.gitbook.io/software-development/front-end/basic/css/overflow.md)
- [Box Model](https://huy312100.gitbook.io/software-development/front-end/basic/css/box-model.md)
- [Debounce & Throttle](https://huy312100.gitbook.io/software-development/javascript/basic/debounce-and-throttle.md)
- [JQuery](https://huy312100.gitbook.io/software-development/front-end/basic/jquery.md)

## How to find the correct page

If the exact page cannot be found, you can still retrieve the information using the documentation query interface.

### Option 1 — Ask a question (recommended)

Perform an HTTP GET request on the documentation index with the `ask` parameter:

```
GET https://huy312100.gitbook.io/software-development/javascript/basic/const-vs-let-vs-var.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

### Option 2 — Browse the documentation index

Full index: https://huy312100.gitbook.io/software-development/sitemap.md

Use this to discover valid page paths or navigate the documentation structure.

### Option 3 — Retrieve the full documentation corpus

Full export: https://huy312100.gitbook.io/software-development/llms-full.txt

Use this to access all content at once and perform your own parsing or retrieval. It will be more expensive.

## Tips for requesting documentation

Prefer `.md` URLs for structured content, append `.md` to URLs (e.g., `/software-development/javascript/basic/const-vs-let-vs-var.md`).

You may also use `Accept: text/markdown` header for content negotiation.