You can do multicolor outputs without any external programs. @echo off SETLOCAL EnableDelayedExpansion for /F “tokens=1,2 delims=#” %%a in (‘”prompt #$H#$E# & echo on & for %%b in (1) do rem”‘) do ( set “DEL=%%a” ) echo say the name of the colors, don’t read call :ColorText 0a “blue” call :ColorText 0C “green” call :ColorText … Read more
TLDR Use this clean one-line function with both rgb and rgba support: const rgba2hex = (rgba) => `#${rgba.match(/^rgba?\((\d+),\s*(\d+),\s*(\d+)(?:,\s*(\d+\.{0,1}\d*))?\)$/).slice(1).map((n, i) => (i === 3 ? Math.round(parseFloat(n) * 255) : parseFloat(n)).toString(16).padStart(2, ‘0’).replace(‘NaN’, ”)).join(”)}` 2021 updated answer Much time has passed since I originally answered this question. Then cool ECMAScript 5 and 2015+ features become largely available on … Read more
The method could vary depending on your needs. Here are 3 ways to calculate Luminance: Luminance (standard for certain colour spaces): (0.2126*R + 0.7152*G + 0.0722*B) source Luminance (perceived option 1): (0.299*R + 0.587*G + 0.114*B) source Luminance (perceived option 2, slower to calculate): sqrt( 0.241*R^2 + 0.691*G^2 + 0.068*B^2 ) → sqrt( 0.299*R^2 + … Read more
Random color generator
The color plugin is only 4kb so much cheaper than the UI library. Of course you’ll want to use a decent version of the plugin and not some buggy old thing which doesn’t handle Safari and crashes when the transitions are too fast. Since a minified version isn’t supplied you might like test various compressors … Read more
RGB to hex and hex to RGB
you don’t nullify line comments. what you want is to turn //var page_background_color=”red”; into /**/var page_background_color=”red”; and vv.
you can use id to get the element you want to style. <!DOCTYPE html> <html> <body> <p id=”myp”>Click the button to change the style of the p element.</p> <button onclick=”myFunction()”>Try it</button> <script> function myFunction() { var color1 = Math.floor((Math.random() * 255) + 1); var color2 = Math.floor((Math.random() * 255) + 1); var color3 = Math.floor((Math.random() … Read more