How to Safely Encode URLs in JavaScript: A Guide to encodeURIComponent and Related Methods

 When working with URLs in JavaScript, encoding is essential to ensure that data is transmitted safely and interpreted correctly by web servers. This post will guide you through the key methods for encoding URLs, their use cases, and best practices.

Why Encode URLs?

Encoding ensures that special characters in a URL—such as &, ?, or =—are not misinterpreted as part of the URL’s syntax. For example, when adding query parameters to a URL, failing to encode them may lead to unexpected behavior or errors.

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