//十六进制颜色值域RGB格式颜色值之间的相互转换 //------------------------------------- //十六进制颜色值的正则表达式 var reg = /^#
//十六进制颜色值域RGB格式颜色值之间的相互转换 //------------------------------------- //十六进制颜色值的正则表达式 var reg = /^#([0-9a-fA-f]{3}|[0-9a-fA-f]{6})$/; /*RGB颜色转换为16进制*/ String.prototype.colorHex = function(){ var that = this; if(/^(rgb|RGB)/.test(that)){ var aColor = that.replace(/(?:||rgb|RGB)*/g,"").split(","); var strHex = "#"; for(var i=0; i<aColor.length; i++){ var hex = Number(aColor[i]).toString(16); if(hex === "0"){ hex += hex; } strHex += hex; } if(strHex.length !== 7){ strHex = that; } return strHex; }else if(reg.test(that)){ var aNum = that.replace(/#/,"").split(""); if(aNum.length === 6){ return that; }else if(aNum.length === 3){ var numHex = "#"; for(var i=0; i<aNum.length; i+=1){ numHex += (aNum[i]+aNum[i]); } return numHex; } }else{ return that; } }; //------------------------------------------------- /*16进制颜色转为RGB格式*/ String.prototype.colorRgb = function(){ var sColor = this.toLowerCase(); if(sColor && reg.test(sColor)){ if(sColor.length === 4){ var sColorNew = "#"; for(var i=1; i<4; i+=1){ sColorNew += sColor.slice(i,i+1).concat(sColor.slice(i,i+1)); } sColor = sColorNew; } //处理六位的颜色值 var sColorChange = []; for(var i=1; i<7; i+=2){ sColorChange.push(parseInt("0x"+sColor.slice(i,i+2))); } return "RGB(" + sColorChange.join(",") + ")"; }else{ return sColor; } }; var sRgb = "RGB(255, 255, 255)" , sHex = "#ffffff"; var sHexColor = sRgb.colorHex();//转换为十六进制方法<code></code> var sRgbColor = sHex.colorRgb();//转为RGB颜色值的方法
