JS通用方法扩展
- /*
- * 系统中JS的扩展函数
- *
- *
- */
- // 清除两边的空格
- String.prototype.trim = function() {
- returnthis.replace(/(^\s*)|(\s*$)/g, ‘‘);
- };
- // 合并多个空白为一个空白
- String.prototype.ResetBlank = function() {
- var regEx = /\s+/g;
- returnthis.replace(regEx, ‘ ‘);
- };
- // 保留数字
- String.prototype.GetNum = function() {
- var regEx = /[^\d]/g;
- returnthis.replace(regEx, ‘‘);
- };
- // 保留中文
- String.prototype.GetCN = function() {
- var regEx = /[^\u4e00-\u9fa5\uf900-\ufa2d]/g;
- returnthis.replace(regEx, ‘‘);
- };
- // String转化为Number
- String.prototype.ToInt = function() {
- return isNaN(parseInt(this)) ? this.toString() : parseInt(this);
- };
- // 得到字节长度
- String.prototype.GetLen = function() {
- var regEx = /^[\u4e00-\u9fa5\uf900-\ufa2d]+$/;
- if (regEx.test(this)) {
- returnthis.length * 2;
- } else {
- var oMatches = this.match(/[\x00-\xff]/g);
- var oLength = this.length * 2 - oMatches.length;
- return oLength;
- }
- };
- // 获取文件全名
- String.prototype.GetFileName = function() {
- var regEx = /^.*\/([^\/\?]*).*$/;
- returnthis.replace(regEx, ‘$1‘);
- };
- // 获取文件扩展名
- String.prototype.GetExtensionName = function() {
- var regEx = /^.*\/[^\/]*(\.[^\.\?]*).*$/;
- returnthis.replace(regEx, ‘$1‘);
- };
- /******add By 刘景宁 2010-12-09 *******/
- String.prototype.replaceAll = function(reallyDo, replaceWith, ignoreCase) {
- if (!RegExp.prototype.isPrototypeOf(reallyDo)) {
- returnthis.replace(new RegExp(reallyDo, (ignoreCase ? "gi" : "g")), replaceWith);
- } else {
- returnthis.replace(reallyDo, replaceWith);
- }
- };
- //格式化字符串 add By 刘景宁 2010-12-09
- String.Format = function() {
- if (arguments.length == 0) {
- return‘‘;
- }
- if (arguments.length == 1) {
- return arguments[0];
- }
- var reg = /{(\d+)?}/g;
- var args = arguments;
- var result = arguments[0].replace(reg, function($0, $1) {
- return args[parseInt($1) + 1];
- });
- return result;
- };
- // 数字补零
- Number.prototype.LenWithZero = function(oCount) {
- var strText = this.toString();
- while (strText.length < oCount) {
- strText = ‘0‘ + strText;
- }
- return strText;
- };
- // Unicode还原
- Number.prototype.ChrW = function() {
- return String.fromCharCode(this);
- };
- // 数字数组由小到大排序
- Array.prototype.Min2Max = function() {
- var oValue;
- for (var i = 0; i < this.length; i++) {
- for (var j = 0; j <= i; j++) {
- if (this[i] < this[j]) {
- oValue = this[i];
- this[i] = this[j];
- this[j] = oValue;
- }
- }
- }
- returnthis;
- };
- // 数字数组由大到小排序
- Array.prototype.Max2Min = function() {
- var oValue;
- for (var i = 0; i < this.length; i++) {
- for (var j = 0; j <= i; j++) {
- if (this[i] > this[j]) {
- oValue = this[i];
- this[i] = this[j];
- this[j] = oValue;
- }
- }
- }
- returnthis;
- };
- // 获得数字数组中最大项
- Array.prototype.GetMax = function() {
- var oValue = 0;
- for (var i = 0; i < this.length; i++) {
- if (this[i] > oValue) {
- oValue = this[i];
- }
- }
- return oValue;
- };
- // 获得数字数组中最小项
- Array.prototype.GetMin = function() {
- var oValue = 0;
- for (var i = 0; i < this.length; i++) {
- if (this[i] < oValue) {
- oValue = this[i];
- }
- }
- return oValue;
- };
- // 获取当前时间的中文形式
- Date.prototype.GetCNDate = function() {
- var oDateText = ‘‘;
- oDateText += this.getFullYear().LenWithZero(4) + new Number(24180).ChrW();
- oDateText += this.getMonth().LenWithZero(2) + new Number(26376).ChrW();
- oDateText += this.getDate().LenWithZero(2) + new Number(26085).ChrW();
- oDateText += this.getHours().LenWithZero(2) + new Number(26102).ChrW();
- oDateText += this.getMinutes().LenWithZero(2) + new Number(20998).ChrW();
- oDateText += this.getSeconds().LenWithZero(2) + new Number(31186).ChrW();
- oDateText += new Number(32).ChrW() + new Number(32).ChrW() + new Number(26143).ChrW() + new Number(26399).ChrW() + new String(‘26085199682010819977222352011620845‘).substr(this.getDay() * 5, 5).ToInt().ChrW();
- return oDateText;
- };
- //扩展Date格式化
- Date.prototype.Format = function(format) {
- var o = {
- "M+": this.getMonth() + 1, //月份
- "d+": this.getDate(), //日
- "h+": this.getHours() % 12 == 0 ? 12 : this.getHours() % 12, //小时
- "H+": this.getHours(), //小时
- "m+": this.getMinutes(), //分
- "s+": this.getSeconds(), //秒
- "q+": Math.floor((this.getMonth() + 3) / 3), //季度
- "S": this.getMilliseconds() //毫秒
- };
- var week = {
- "0": "\u65e5",
- "1": "\u4e00",
- "2": "\u4e8c",
- "3": "\u4e09",
- "4": "\u56db",
- "5": "\u4e94",
- "6": "\u516d"
- };
- if (/(y+)/.test(format)) {
- format = format.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));
- }
- if (/(E+)/.test(format)) {
- format = format.replace(RegExp.$1, ((RegExp.$1.length > 1) ? (RegExp.$1.length > 2 ? "\u661f\u671f" : "\u5468") : "") + week[this.getDay() + ""]);
- }
- for (var k in o) {
- if (new RegExp("(" + k + ")").test(format)) {
- format = format.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));
- }
- }
- return format;
- }
- Date.prototype.Diff = function(interval, objDate) {
- //若参数不足或 objDate 不是日期类型則回传 undefined
- if (arguments.length < 2 || objDate.constructor != Date) { return undefined; }
- switch (interval) {
- //计算秒差
- case‘s‘: return parseInt((objDate - this) / 1000);
- //计算分差
- case‘n‘: return parseInt((objDate - this) / 60000);
- //计算時差
- case‘h‘: return parseInt((objDate - this) / 3600000);
- //计算日差
- case‘d‘: return parseInt((objDate - this) / 86400000);
- //计算周差
- case‘w‘: return parseInt((objDate - this) / (86400000 * 7));
- //计算月差
- case‘m‘: return (objDate.getMonth() + 1) + ((objDate.getFullYear() - this.getFullYear()) * 12) - (this.getMonth() + 1);
- //计算年差
- case‘y‘: return objDate.getFullYear() - this.getFullYear();
- //输入有误
- default: return undefined;
- }
- };
- //检测是否为空
- Object.prototype.IsNullOrEmpty = function() {
- var obj = this;
- var flag = false;
- if (obj == null || obj == undefined || typeof (obj) == ‘undefined‘ || obj == ‘‘) {
- flag = true;
- } elseif (typeof (obj) == ‘string‘) {
- obj = obj.trim();
- if (obj == ‘‘) {//为空
- flag = true;
- } else {//不为空
- obj = obj.toUpperCase();
- if (obj == ‘NULL‘ || obj == ‘UNDEFINED‘ || obj == ‘{}‘) {
- flag = true;
- }
- }
- }
- else {
- flag = false;
- }
- return flag;
- };
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