# Web Development flash cards: Freelancer level

18 Web Development terms at the Freelancer level, as flash cards.

Updated: September 27, 2026

- [Study these as flash cards](https://www.ask-codey.com/decks/web-development/4/flash)
- [Play Memory with them](https://www.ask-codey.com/games/memory?category=web-development&level=4)

## Terms in this deck

- [Caching Headers](https://www.ask-codey.com/glossary/caching-headers): Headers that say how long a response may be reused.
- [Conditional Request](https://www.ask-codey.com/glossary/conditional-request): A request that only proceeds if the resource is still in the expected state.
- [Content Negotiation](https://www.ask-codey.com/glossary/content-negotiation): The client asks for a format with Accept; the server picks one it supports.
- [crossorigin](https://www.ask-codey.com/glossary/crossorigin): An attribute that configures a cross-origin request and whether credentials are included.
- [ETag](https://www.ask-codey.com/glossary/etag): A version fingerprint that lets clients skip downloading unchanged data.
- [Focusable area](https://www.ask-codey.com/glossary/focusable-area): A page region or control that can become the target of keyboard focus.
- [Iframe sandbox](https://www.ask-codey.com/glossary/iframe-sandbox): Restrictions applied to content in an iframe through its sandbox attribute.
- [Light dismiss](https://www.ask-codey.com/glossary/light-dismiss): Closing a temporary interface by interacting outside it or making a platform close request.
- [Multipart form data](https://www.ask-codey.com/glossary/multipart-form-data): A form encoding that separates entries into parts and supports file uploads.
- [nonce attribute](https://www.ask-codey.com/glossary/nonce-attribute): A one-use token that a Content Security Policy can require on allowed inline script or style elements.
- [OAuth 2.0](https://www.ask-codey.com/glossary/oauth-2-0): A standard for granting apps limited access via tokens instead of passwords.
- [OpenID Connect](https://www.ask-codey.com/glossary/openid-connect): Sign-in built on OAuth 2.0; used by "Sign in with Google".
- [Preflight Request](https://www.ask-codey.com/glossary/preflight-request): The OPTIONS check a browser sends before some cross-origin requests.
- [referrerpolicy](https://www.ask-codey.com/glossary/referrerpolicy): An attribute that controls which referrer information is sent when fetching or navigating.
- [Refresh Token](https://www.ask-codey.com/glossary/refresh-token): A long-lived token used to get new short-lived access tokens.
- [Sequential focus navigation](https://www.ask-codey.com/glossary/sequential-focus-navigation): Moving focus through eligible page controls in an ordered sequence, commonly with the Tab key.
- [Subresource integrity](https://www.ask-codey.com/glossary/subresource-integrity): A security feature that checks a fetched resource against an expected cryptographic hash.
- [URL-encoded form data](https://www.ask-codey.com/glossary/url-encoded-form-data): A form encoding that represents name-and-value pairs using URL-style escaping.

[Read them in the glossary](https://www.ask-codey.com/glossary/subjects/web-development/freelancer)

Source: https://www.ask-codey.com/decks/web-development/freelancer