JavaScript:js常用工具笔记

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Date.prototype.Format = function(fmt) {var o = {"M+" : this.getMonth() + 1, // 月份"d+" : this.getDate(), // 日"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};if (/(y+)/.test(fmt))fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));for ( var k in o)if (new RegExp("(" + k + ")").test(fmt))fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]): (("00" + o[k]).substr(("" + o[k]).length)));return fmt;};

Date.prototype.addDays = function(d) {this.setDate(this.getDate() + d);};Date.prototype.addWeeks = function(w) {this.addDays(w * 7);};Date.prototype.addMonths = function(m) {var d = this.getDate();this.setMonth(this.getMonth() + m);if (this.getDate() < d)this.setDate(0);};Date.prototype.addYears = function(y) {var m = this.getMonth();this.setFullYear(this.getFullYear() + y);if (m < this.getMonth()) {this.setDate(0);}};

// 测试 var now = new Date(); now.addDays(1);//加减日期操作// alert(now.Format("yyyy-MM-dd"));Date.prototype.dateDiff = function(interval, endTime) {switch (interval) {case "s": // 计算秒差return parseInt((endTime - this) / 1000);case "n": // 计算分差return parseInt((endTime - this) / 60000);case "h": // 计算时差return parseInt((endTime - this) / 3600000);case "d": // 计算日差return parseInt((endTime - this) / 86400000);case "w": // 计算周差return parseInt((endTime - this) / (86400000 * 7));case "m": // 计算月差return (endTime.getMonth() + 1)+ ((endTime.getFullYear() - this.getFullYear()) * 12)- (this.getMonth() + 1);case "y": // 计算年差return endTime.getFullYear() - this.getFullYear();default: // 輸入有误return undefined;}}

/** * 需引入 <script src="js/jquery-2.0.3.min.js"></script> <script * src="js/bootstrap.min.js"></script> */var start2end = function() {var startDate = new Date();startDate.setDate(startDate.getDate() - 31);$("#startDate").val(startDate.Format("yyyy-MM-dd"));var endDate = new Date();endDate.setDate(endDate.getDate() - 1);$("#endDate").val(endDate.Format("yyyy-MM-dd"));$("#startDate").datepicker({dateFormat : "yy-mm-dd"});$("#endDate").datepicker({dateFormat : "yy-mm-dd"});};var start_end = function(gap) {var startDate = new Date();startDate.setDate(startDate.getDate() - gap);$("#startDate").val(startDate.Format("yyyy-MM-dd"));var endDate = new Date();endDate.setDate(endDate.getDate() - 1);$("#endDate").val(endDate.Format("yyyy-MM-dd"));$("#startDate").datepicker({dateFormat : "yy-mm-dd"});$("#endDate").datepicker({dateFormat : "yy-mm-dd"});};

/** * 需引入 <link href="css/datepicker.css" rel="stylesheet"> <script * src="js/jquery-2.0.3.min.js"></script> <script * src="js/bootstrap-datepicker.js"></script> */var months = function() {var today = new Date();today.setDate(today.getDate());$("#month").val(today.Format("yyyy-MM"));$("#month").datepicker({format : "yyyy-mm",viewMode : 1,minViewMode : 1});};

Array.prototype.isInArray = function(e) {for (i = 0; i < this.length; i++) {if (this[i] == e)return true;}return false;}

Number.prototype.toPercent = function(){return (Math.round(this * 10000)/100).toFixed(2) + '%';}

var getDate = function(time){        var date = new Date(time);        var dt = date.getFullYear() +"-"+(date.getMonth()+1)+"-"+date.getDate();        return dt;};var  getMsc = function(yyyy,mm,dd){    var date = new Date(yyyy,mm-1,dd);    return date.getTime();};var t1 = getMsc(2014,6,10);var t2 = getMsc(2014,6,22);

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