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132 lines
3.8 KiB
132 lines
3.8 KiB
//十六进制颜色值域RGB格式颜色值之间的相互转换
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//-------------------------------------
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//十六进制颜色值的正则表达式
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var reg = /^#([0-9a-fA-f]{3}|[0-9a-fA-f]{6})$/;
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/*RGB颜色转换为16进制*/
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String.prototype.colorHex = function () {
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var that = this;
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if (/^(rgb|RGB)/.test(that)) {
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var aColor = that.replace(/(?:\(|\)|rgb|RGB)*/g, "").split(",");
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var strHex = "#";
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for (var i = 0; i < aColor.length; i++) {
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var hex = Number(aColor[i]).toString(16);
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if (hex === "0") {
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hex += hex;
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}
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strHex += hex;
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}
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if (strHex.length !== 7) {
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strHex = that;
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}
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return strHex;
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} else if (reg.test(that)) {
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var aNum = that.replace(/#/, "").split("");
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if (aNum.length === 6) {
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return that;
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} else if (aNum.length === 3) {
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var numHex = "#";
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for (var i = 0; i < aNum.length; i += 1) {
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numHex += (aNum[i] + aNum[i]);
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}
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return numHex;
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}
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} else {
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return that;
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}
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};
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//-------------------------------------------------
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/*16进制颜色转为RGB格式*/
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String.prototype.colorRgb = function () {
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var sColor = this.toLowerCase();
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if (sColor && reg.test(sColor)) {
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if (sColor.length === 4) {
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var sColorNew = "#";
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for (var i = 1; i < 4; i += 1) {
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sColorNew += sColor.slice(i, i + 1).concat(sColor.slice(i, i + 1));
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}
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sColor = sColorNew;
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}
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//处理六位的颜色值
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var sColorChange = [];
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for (var i = 1; i < 7; i += 2) {
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sColorChange.push(parseInt("0x" + sColor.slice(i, i + 2)));
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}
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return "RGB(" + sColorChange.join(",") + ")";
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} else {
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return sColor;
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}
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};
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//-------------------------------------------------
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// var sRgb = "RGB(255, 255, 255)" , sHex = "#00538b";
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// var sHexColor = sRgb.colorHex();//转换为十六进制方法
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// var sRgbColor = sHex.colorRgb();//转为RGB颜色值的方法
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// console.log(sHexColor);
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// console.log(sRgbColor);
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/**
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* 获取指定年月的最后一天
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* @param {Number} year 年份，公元年
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* @param {Number} month 月份有效值1~12
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* @return {Number} 返回1~31之间的一个数
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*/
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function getLastDay(year, month) {
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var d = new Date(0);
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if (month == 12) {
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d.setUTCFullYear(year + 1);
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d.setUTCMonth(0);
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} else {
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d.setUTCFullYear(year);
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d.setUTCMonth(month);
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}
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d.setTime(d.getTime() - 1);
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return d.getUTCDate();
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}
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/**
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* 功能：转换字符串到日期
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*/
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function convertStrToDate(date) {
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date = date.substring(0, 19);
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date = date.replace(/-/g, '/');
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var timestamp = new Date(date).getTime();
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// 根据毫秒数构建 Date 对象
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var d1 = new Date(timestamp);
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return d1;
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}
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//迭代方式实现
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function padding1(num, length) {
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for (var len = (num + "").length; len < length; len = num.length) {
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num = "0" + num;
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}
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return num;
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}
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//动态加载js并运行
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//用法
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//loadJS('file.js',function(){
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// alert(1);
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//});
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function loadJS(url, callback) {
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var script = document.createElement('script'),
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fn = callback || function () {
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};
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script.type = 'text/javascript';
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//IE
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if (script.readyState) {
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script.onreadystatechange = function () {
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if (script.readyState == 'loaded' || script.readyState == 'complete') {
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script.onreadystatechange = null;
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fn();
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}
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};
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} else {
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//其他浏览器
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script.onload = function () {
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fn();
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};
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}
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script.src = url;
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document.getElementsByTagName('head')[0].appendChild(script);
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} |