Last active
November 18, 2020 00:23
-
-
Save lazerl0rd/db02824eea921e8474d1291683fdca37 to your computer and use it in GitHub Desktop.
A JS library for inverting colour.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| /* | |
| invertJS (A JS library for inverting colour) | |
| By: Diab Neiroukh | |
| Licensed-under: The GNU GPLv3 | |
| Last-updated: 23/Feb/2020 | |
| */ | |
| function invertcolour(colour) { | |
| colour = colour.replace('#', ''); | |
| if (colour.length !== 6) { | |
| colour = Array.prototype.join.call(arguments).match(/(-?[0-9\.]+)/g); | |
| for (i = 0; i < colour.length; i++) { | |
| colour[i] = ((i === 3 ? 1 : 255) - colour[i]); | |
| } | |
| for (j = 1; j < colour.length; j++) | |
| colour[j] = " " + colour[j]; | |
| colour = "rgb(" + colour + ")"; | |
| return colour; | |
| } | |
| colour = colour.toUpperCase(); | |
| splitnum = colour.split(""); | |
| resultnum = ""; | |
| simplenum = "FEDCBA9876".split(""); | |
| complexnum = new Array(); | |
| complexnum.A = "5"; | |
| complexnum.B = "4"; | |
| complexnum.C = "3"; | |
| complexnum.D = "2"; | |
| complexnum.E = "1"; | |
| complexnum.F = "0"; | |
| for (i = 0; i < 6; i++) { | |
| if (!isNaN(splitnum[i])) { | |
| resultnum += simplenum[splitnum[i]]; | |
| } else if (complexnum[splitnum[i]]) { | |
| resultnum += complexnum[splitnum[i]]; | |
| } else { | |
| return false; | |
| } | |
| } | |
| resultnum = "#" + resultnum; | |
| return resultnum; | |
| } |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add RGBA support.