encodeURIComponent vs encodeURI: Which One Should You Use?
encodeURI preserves URL structure; encodeURIComponent encodes everything. Learn the difference, when each applies, and common bugs caused by mixing them.
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Tags: encoding, javascript, url
encodeURIComponent vs encodeURI: Which One Should You Use? JavaScript gives you two encoding functions that look similar but behave very differently. Using the wrong one is one of the most common URL bugs in JavaScript code — it is silent, looks correct, but produces broken behavior in specific cases. This post explains exactly what each function does and when to use which. --- The Short Answer *: Use this when encoding a value — a query parameter value, a path segment, anything that is data inside a URL. : Use this when encoding a complete URL that might contain characters a server would reject, but without changing the URL's structure. In practice: You will almost always want . has a narrow use case. --- What Each Function Encodes The difference comes down to which characters each…
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