Professional Web glossary

Definitions beginning with J

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Definitions beginning with J

Search within this letter or use the alphabet to continue exploring the complete glossary.

8 terms displayed

Development and code #

JAMstack

Architecture approach based on JavaScript, APIs and prebuilt files, often distributed through a CDN.

Also searched as : javascript api markup
Development and code #

Java

General-purpose programming language used for many systems, services and enterprise applications.

Also searched as : jvm programming
Development and code #

JavaScript

Primary programming language of the browser, also used server-side and in many tools.

Also searched as : js ecmascript
Design, UX and accessibility #

JPEG

Compressed image format suited to photographs but without transparency support like PNG.

Also searched as : jpg image
Development and code #

jQuery

Long-standing JavaScript library simplifying document manipulation, events and certain network requests.

Also searched as : javascript library
Development and code #

JSON

Lightweight structured text format widely used to exchange data between services and applications.

Also searched as : javascript object notation
SEO, search and visibility #

JSON-LD

JSON format for linked data, often used to embed Schema.org structured data in a page.

Also searched as : structured data schema
Security and privacy #

JWT

JSON Web Token: signed format carrying information or permissions between parties, often in authentication systems.

Also searched as : token auth
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Editorial method

Definitions written for people, structured for machines.

The entries are editorially reformulated in plain language, connected to stable URLs and represented with DefinedTerm structured data. They provide orientation, not a substitute for official standards, legal advice or vendor documentation.