Understanding URL Encoding: escape, encodeURI, encodeURIComponent, Percent‑Encoding, ASCII, Unicode and UTF‑8

This article explains the differences between JavaScript's escape, encodeURI and encodeURIComponent functions, the principles of percent‑encoding, the classification of reserved, unreserved and unsafe characters, and provides an overview of ASCII, Unicode and UTF‑8 character encodings.

ASCIIESCAPEURL encoding

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Understanding URL Encoding: escape, encodeURI, encodeURIComponent, Percent‑Encoding, ASCII, Unicode and UTF‑8

Aotu Lab

Jun 30, 2017 · Fundamentals

Why Do escape and encodeURI Encode URLs Differently? Explore Percent-Encoding

This article explains the differences between JavaScript’s escape, encodeURI, and encodeURIComponent functions, detailing their encoding rules, percent‑encoding standards, reserved and unreserved characters, and how Unicode characters are transformed into UTF‑8 byte sequences, while also covering ASCII, Unicode, and UTF‑8 fundamentals.

JavaScriptURL encodingUTF-8

0 likes · 11 min read

Why Do escape and encodeURI Encode URLs Differently? Explore Percent-Encoding