The decodeURIComponent()
method decodes a Uniform Resource Identifier (URI) component previously created by encodeURIComponent or by a similar routine.
decodeURIComponent(encodedURI)
encodedURI
Replaces each escape sequence in the encoded URI component with the character that it represents.
decodeURIComponent("JavaScript_%D1%88%D0%B5%D0%BB%D0%BB%D1%8B"); // "JavaScript_шеллы"
Created by Mozilla Contributors, license: CC-BY-SA 2.5