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Synchronous - Glossary | MDN 1/3 https://developer.mozilla.org/en-US/docs/Glossary/Synchronous reference web, html, css, javascript, documentation 2026-05-05T05:46:28.133459+00:00 kb-cron

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  1. Glossary
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Synchronous

Synchronous refers to real-time communication where each party receives (and if necessary, processes and replies to) messages instantly (or as near to instantly as possible). A human example is the telephone — during a telephone call you tend to respond to another person immediately. Many programming commands are also synchronous — for example when you type in a calculation, the environment will return the result to you instantly, unless you program it not to.

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