Nodejs String to Hex Convert toHex()

Method Source Code

String.prototype.toHex = function () {

    var self = this,
        hex, regex = /\(([^)]+)\)/,// w ww  . j  a v  a2  s.  c  o m
        rgb = regex.exec(self)[1].split(','),
        red = parseInt(rgb[0]), // skip rgba(
        green = parseInt(rgb[1]), // this is just g
        blue = parseInt(rgb[2]); // parseInt scraps trailing )
    function toHEX(r, g, b) {
        //console.log(r,g,b);
        r = r.toString(16).length ==1 ? r.toString(16)+r.toString(16):r.toString(16);
        g = g.toString(16).length ==1 ? g.toString(16)+g.toString(16):g.toString(16);
        b = b.toString(16).length ==1 ? b.toString(16)+b.toString(16):b.toString(16);

        return "#".concat(r,g,b);
    }
    return toHEX(red,green,blue);
};

Related

1. hex()

   String.prototype.hex = function() {
     return bigInt(this.substr(0)).toHex()
   

2. hex10()

   String.prototype.hex10 = function() {
     var x= (/^\#/.test(this))? this.substring(1): this;
     return parseInt(x,16);
   

3. hex2Dec()

   String.prototype.hex2Dec = function() {
     return parseInt(this,16);
   };
   

4. toHex()

   String.prototype.toHex = function() {
     for (var i = 1, j = this.length, $ = this.charCodeAt(0).toString(16); i<j; i++) $ += ' ' + this.charCodeAt(i).toString(16);
     return $;
   };
   

5. toHex(v1)

   Util.toHex = function(v1) {
     var res = (new Number(v1).toString(16));
     if (res.length == 1) {
       res = "0" + res;
     return res;
   

6. toHexString()

   Number.prototype.toHexString = function() {
     if (this === null) { return null; }
     if (isNaN(this)) { return this; }
     var num;
     var hex;
     if (this < 0) {
       num = 0xFFFFFFFF + this + 1;
     else {
   ...
   

7. toHexString()

   String.prototype.toHexString = function()
     var res = [];
     for(var i=0, j=this.length; i < j; ++i)
       var chr = this.charCodeAt(i).toString(16);
       chr = ((chr.length == 1)?'0':'') + chr;
       res.push(chr);
     return res.join(' ').toUpperCase();