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  1. MDN Web Docs Glossary: Definitions of Web-related terms
  2. Guard

Guard

Guard is a feature of Headers objects (as defined in the Fetch spec, which affects whether methods such as set() and append() can change the header's contents. For example, immutable guard means that headers can't be changed. For more information, read Fetch basic concepts: guard.

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Last modified: Oct 8, 2021, by MDN contributors

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