JavaScript中的DateAdd()方法實現
function DateAdd (interval,number,date){//確保為date類型:date=convertToDate(date); switch(interval.toLowerCase()){ case "y": return new Date(date.setFullYear(date.getFullYear()+number)); case "m": return new Date(date.setMonth(date.getMonth()+number)); case "d": return new Date(date.setDate(date.getDate()+number)); case "w": return new Date(date.setDate(date.getDate()+7*number)); case "h": return new Date(date.setHours(date.getHours()+number)); case "n": return new Date(date.setMinutes(date.getMinutes()+number)); case "s": return new Date(date.setSeconds(date.getSeconds()+number)); case "l": return new Date(date.setMilliseconds(date.getMilliseconds()+number)); }};function dateFormat(date){//確保為date類型:date=convertToDate(date);var defyear = parseInt(date.getFullYear());//當前年 var defmonth = parseInt(date.getMonth()+1,10); //當前月 var defday=date.getDate();//當前日 var result=""; if(defmonth<10&&defday<10){ result=defyear+'-0'+defmonth+'-0'+defday; }else if(defmonth<10){ result=defyear+'-0'+defmonth+'-'+defday; }else if(defday<10){ result=defyear+'-'+defmonth+'-0'+defday; }else{result=defyear+'-'+defmonth+'-'+defday; } return result;};//javascript中定義的replaceAll()String.prototype.replaceAll = function(s1,s2){return this.replace(new RegExp(s1,"gm"),s2);};//將日期類型格式的字符串轉化為日期類型:function convertToDate(expr){if(typeof expr=='string'){expr=expr.replaceAll('-','/');//將字符中的-替換為/,原因是IE或其它瀏覽器不支持-符號的Date.parse()return new Date(Date.parse(expr));}else{return expr;}};