encodeuricomponent reverse

1var set1 = ";,/?:@&=+$";  // Reserved Characters
2var set2 = "-_.!~*'()";   // Unescaped Characters
3var set3 = "#";           // Number Sign
4var set4 = "ABC abc 123"; // Alphanumeric Characters + Space
5
6console.log(encodeURI(set1)); // ;,/?:@&=+$
7console.log(encodeURI(set2)); // -_.!~*'()
8console.log(encodeURI(set3)); // #
9console.log(encodeURI(set4)); // ABC%20abc%20123 (the space gets encoded as %20)
10
11console.log(encodeURIComponent(set1)); // %3B%2C%2F%3F%3A%40%26%3D%2B%24
12console.log(encodeURIComponent(set2)); // -_.!~*'()
13console.log(encodeURIComponent(set3)); // %23
14console.log(encodeURIComponent(set4)); // ABC%20abc%20123 (the space gets encoded as %20)
15
16

1  var result = decodeURIComponent(input);