decodeURIComponent

Function

DefinitiondecodeURIComponent is a built-in JavaScript function designed to decode a Uniform Resource Identifier (URI) component. It specifically reverses the encoding performed by encodeURIComponent, converting percent-encoded characters back to their original form. This function is crucial for processing data found within a URL, such as query parameters, ensuring that special characters are correctly interpreted after being safely transmitted through the web. It allows web applications to accurately reconstruct original strings that might contain reserved URI characters like spaces or symbols.

Example

"const encodedURI = "JavaScript%20is%20fun%21"; const decodedURI = decodeURIComponent(encodedURI); // decodedURI will be "JavaScript is fun!""

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Etymology & Word Origins

Derived from the JavaScript language specification, it combines 'decode' (to convert an encoded message back into its original form) with 'URI component' (referring to a specific part of a web address), indicating its purpose in web address manipulation.

Synonyms

Unescape URI component Unencode URL part Revert URI encoding Parse URL segment

Antonyms

encodeURIComponent Escape URI component Encode URL part Percent-encode URI

Translations

Spanishdecodificar componente de URI

Frenchdécoder le composant d'URI

GermanURI-Bestandteil dekodieren

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