//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 = "#00538b"; // var sHexColor = sRgb.colorHex();//转换为十六进制方法 // var sRgbColor = sHex.colorRgb();//转为RGB颜色值的方法 // console.log(sHexColor); // console.log(sRgbColor); /** * 获取指定年月的最后一天 * @param {Number} year 年份,公元年 * @param {Number} month 月份有效值1~12 * @return {Number} 返回1~31之间的一个数 */ function getLastDay(year, month) { var d = new Date(0); if (month == 12) { d.setUTCFullYear(year + 1); d.setUTCMonth(0); } else { d.setUTCFullYear(year); d.setUTCMonth(month); } d.setTime(d.getTime() - 1); return d.getUTCDate(); } /** * 功能:转换字符串到日期 */ function convertStrToDate(date) { date = date.substring(0, 19); date = date.replace(/-/g, '/'); var timestamp = new Date(date).getTime(); // 根据毫秒数构建 Date 对象 var d1 = new Date(timestamp); return d1; } //迭代方式实现 function padding1(num, length) { for (var len = (num + "").length; len < length; len = num.length) { num = "0" + num; } return num; } //动态加载js并运行 //用法 //loadJS('file.js',function(){ // alert(1); //}); function loadJS(url, callback) { var script = document.createElement('script'), fn = callback || function () { }; script.type = 'text/javascript'; //IE if (script.readyState) { script.onreadystatechange = function () { if (script.readyState == 'loaded' || script.readyState == 'complete') { script.onreadystatechange = null; fn(); } }; } else { //其他浏览器 script.onload = function () { fn(); }; } script.src = url; document.getElementsByTagName('head')[0].appendChild(script); }