独角兽企业重金招聘Python工程师标准>>>
//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).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+aNum);}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; }};
使用颜色转换方法
ar sRgb = "RGB(23, 245, 56)" , sHex = "#34538b";var sHexColor = sRgb.colorHex();var sRgbColor = sHex.colorRgb();
其中colorHex()表示转换为十六进制方法，colorRgb()表示转为RGB颜色值的方法
