js Color Burn or Dodge

/ * ************************************************************ color processing ********************* ************* * / 
     // hex color rgb color transfer 
      function HexToRgb (STR) {
         var R & lt = / ^ \ # [0-9A-F.]. 6} {$ /? ;
         / / the Test method to check whether there is a pattern in a string, then return if there is true, otherwise false 
        IF (R.TEST (str)!) return window.alert ( "input error of hex" );
         // the replace replace Find to string 
        STR = str.replace ( "#", "" );
         // match query array obtained 
        var HXS = str.match (/../ G);
         // Alert ( 'BF:' + HXS) 
        for ( var I = 0; I <. 3; I ++) HXS [I] = the parseInt ([I] HXS, 16);
        //alert(parseInt(80, 16))
        //console.log(hxs);
        return hxs;
    }
      // GRB color Color Hex turn 
    function RgbToHex (A, B, C) {
             var R & lt = / ^ \ $ D {l, 3} / ;
             IF (R.TEST (A) || R.TEST (B)!! R.TEST || (C))! return window.alert ( "rgb color value of the input error" );
             var hexs = [a.toString (16), b.toString (16), c.toString (16 )] ;
             for ( var I = 0; I <. 3; I ++) IF (hexs [I] == .length. 1) hexs [I] = "0" + hexs [I];
             return "#" + hexs.join ( " " );
        }

    // get color values darken hex color value, level of deeper level, the margin between 0-1 
    function getDarkColor (color, level) {
         var R & lt = / ^ \ #? [0-9A-F.]. 6 { $} / ;
         IF (R.TEST (color)!) return window.alert ( "hex color value of the input error" );
         var RGBC = the this .HexToRgb (color);
         // Floor rounded down 
        for ( var I 0 =; I <. 3; I ++) RGBC [I] = Math.floor (RGBC [I] * (. 1 - Level));
         return  the this .RgbToHex (RGBC [0], RGBC [. 1], RGBC [2 ]) ;
    }
    // get color values Dodge hex color values of color, level of deeper level, the limit between 0-1 
    function getLightColor (color, level) {
         var R & lt = / ^ \ #? [0-9A-F.] { } $. 6 / ;
         IF (R.TEST (color)!) return window.alert ( "hex color value of the input error" );
         var RGBC = the this .HexToRgb (color);
         for ( var I = 0; I <. 3 ; I ++) RGBC [I] Math.floor = ((255 - RGBC [I]) + * Level RGBC [I]);
         return  the this .RgbToHex (RGBC [0], RGBC [. 1], RGBC [2 ]);
    }
    
 / * *************************** color processing end ****************** ******************* * /

 

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Original link: https: //blog.csdn.net/zhh0310235/article/details/99985866