//該方法有兩個(gè)參數(shù)，date是給定的日期型參數(shù)，days是需要在該日期進(jìn)行加減的天數(shù)。 //例如，add(2010-10-01,-3)返回從2010-10-01這一天往前退3天的日期即2010-09-28 function addDate(date,days){ var d=new Date(date); d.setDate(d.getDate()+days); var m=d.getMonth()+1; var tmpDate = d.getFullYear()+ "/" + m + "/" + d.getDate(); var resultDate = new Date(tmpDate); return resultDate; } //對(duì)選擇的年月轉(zhuǎn)換為YYYY-MM-dd的格式 function changeDateFormat(DateIn){ var year = 0; var month = 0; var Day = 0; var currentDate = ""; year = DateIn.getYear(); month = DateIn.getMonth() + 1; Day = DateIn.getDate(); currentDate = year + "-"; if(month > 10){ currentDate = currentDate + month + "-"; }else{ currentDate = currentDate + "0" + month + "-"; } if(Day > 10){ currentDate = currentDate + Day; }else{ currentDate = currentDate + "0" + Day; } return currentDate; } //根據(jù)選擇的周計(jì)算出本周的開始日和結(jié)束日 function weekToDate(weekNumber,strWeekDay,dateIn){ //輸出的開始日 var outputDate_1 = ""; //輸出的結(jié)束日 var outputDate_2 = ""; var tmp_date= ""; //如果選擇的年月1號(hào)這一天恰好為sunday，該周monday的日期為這一天的日期-6 if(strWeekDay == '0'){ outputDate_1 = addDate(dateIn,-6); } //如果選擇的年月1號(hào)這一天為monday,第二個(gè)參數(shù)設(shè)為0，以下以此類推。 if(strWeekDay == '1'){ outputDate_1 = addDate(dateIn,0); } if(strWeekDay == '2'){ outputDate_1 = addDate(dateIn,-1); } if(strWeekDay == '3'){ outputDate_1 = addDate(dateIn,-2); } if(strWeekDay == '4'){ outputDate_1 = addDate(dateIn,-3); } if(strWeekDay == '5'){ outputDate_1 = addDate(dateIn,-4); } if(strWeekDay == '6'){ outputDate_1 = addDate(dateIn,-5); } if(weekNumber == '1'){ outputDate_2 = dateIn; } if(weekNumber == '2'){ outputDate_2 = addDate(outputDate_1,+7); } if(weekNumber == '3'){ outputDate_2 = addDate(outputDate_1,+14); } if(weekNumber == '4'){ outputDate_2 = addDate(outputDate_1,+21); } if(weekNumber == '5'){ outputDate_2 = addDate(outputDate_1,+28); } if(weekNumber == '1'){ //第1周的開始日結(jié)束日計(jì)算基點(diǎn)都是outputDate_1,因此單獨(dú)判斷 document.getElementById("spnDate").value = changeDateFormat(outputDate_1); temp_date = addDate(outputDate_1,+6); document.getElementById("finishTime").value =changeDateFormat(temp_date); }else{ //第2周以后的開始日結(jié)束日都以outputDate_2為計(jì)算基點(diǎn) document.getElementById("spnDate").value = changeDateFormat(outputDate_2); temp_date = addDate(outputDate_2,+6); document.getElementById("finishTime").value =changeDateFormat(temp_date); } } function getFromToDateOfSelectedWeek(){ var year = document.getElementById("sltYear"); var optionYear=year.getElementsByTagName("option"); var strYear = "" ; for(var i=0;i<optionYear.length;++i) { if(optionYear[i].selected){ strYear = optionYear[i].text; } } var month = document.getElementById("sltMonth"); var option = month.getElementsByTagName("option"); var strMonth = "" ; for(var i=0;i<option.length;++i) { if(option[i].selected){ strMonth = option[i].text; } } //根據(jù)選擇的年月，組合成yyyy/mm/01的日期字符串 var sltDate_tmp_0 = strYear+ "/" + strMonth + "/" + "1"; //將日期字符串轉(zhuǎn)換為日期型 var sltDate_tmp_1 = new Date(sltDate_tmp_0); //取得該月1號(hào)所在的星期數(shù) var weekDay = sltDate_tmp_1.getDay(); //獲取頁(yè)面選擇的周數(shù) var weekNumber = document.getElementById("weekNumber"); var optionWeek=weekNumber.getElementsByTagName("option"); var strWeek = "" ; var tmp_date= ""; var outputDate_1 = ""; var outputDate_2 = ""; for(var i=0;i<optionWeek.length;++i) { if(optionWeek[i].selected){ strWeek = optionWeek[i].text; } } //選擇第1周時(shí)計(jì)算該年月1號(hào)這一天為monday到sunday各種可能性，返回該周monday到sunday的日期 //以下判斷以此類推 if(strWeek == '1'){ if(weekDay == '0'){ weekToDate(strWeek,'0',sltDate_tmp_1); } if(weekDay == '1'){ weekToDate(strWeek,'1',sltDate_tmp_1); } if(weekDay == '2'){ weekToDate(strWeek,'2',sltDate_tmp_1); } if(weekDay == '3'){ weekToDate(strWeek,'3',sltDate_tmp_1); } if(weekDay == '4'){ weekToDate(strWeek,'4',sltDate_tmp_1); } if(weekDay == '5'){ weekToDate(strWeek,'5',sltDate_tmp_1); } if(weekDay == '6'){ weekToDate(strWeek,'6',sltDate_tmp_1); } } if(strWeek == '2'){ if(weekDay == '0'){ weekToDate(strWeek,'0',sltDate_tmp_1); } if(weekDay == '1'){ weekToDate(strWeek,'1',sltDate_tmp_1); } if(weekDay == '2'){ weekToDate(strWeek,'2',sltDate_tmp_1); } if(weekDay == '3'){ weekToDate(strWeek,'3',sltDate_tmp_1); } if(weekDay == '4'){ weekToDate(strWeek,'4',sltDate_tmp_1); } if(weekDay == '5'){ weekToDate(strWeek,'5',sltDate_tmp_1); } if(weekDay == '6'){ weekToDate(strWeek,'6',sltDate_tmp_1); } } if(strWeek == '3'){ if(weekDay == '0'){ weekToDate(strWeek,'0',sltDate_tmp_1); } if(weekDay == '1'){ weekToDate(strWeek,'1',sltDate_tmp_1); } if(weekDay == '2'){ weekToDate(strWeek,'2',sltDate_tmp_1); } if(weekDay == '3'){ weekToDate(strWeek,'3',sltDate_tmp_1); } if(weekDay == '4'){ weekToDate(strWeek,'4',sltDate_tmp_1); } if(weekDay == '5'){ weekToDate(strWeek,'5',sltDate_tmp_1); } if(weekDay == '6'){ weekToDate(strWeek,'6',sltDate_tmp_1); } } if(strWeek == '4'){ if(weekDay == '0'){ weekToDate(strWeek,'0',sltDate_tmp_1); } if(weekDay == '1'){ weekToDate(strWeek,'1',sltDate_tmp_1); } if(weekDay == '2'){ weekToDate(strWeek,'2',sltDate_tmp_1); } if(weekDay == '3'){ weekToDate(strWeek,'3',sltDate_tmp_1); } if(weekDay == '4'){ weekToDate(strWeek,'4',sltDate_tmp_1); } if(weekDay == '5'){ weekToDate(strWeek,'5',sltDate_tmp_1); } if(weekDay == '6'){ weekToDate(strWeek,'6',sltDate_tmp_1); } } if(strWeek == '5'){ if(weekDay == '0'){ weekToDate(strWeek,'0',sltDate_tmp_1); } if(weekDay == '1'){ weekToDate(strWeek,'1',sltDate_tmp_1); } if(weekDay == '2'){ weekToDate(strWeek,'2',sltDate_tmp_1); } if(weekDay == '3'){ weekToDate(strWeek,'3',sltDate_tmp_1); } if(weekDay == '4'){ weekToDate(strWeek,'4',sltDate_tmp_1); } if(weekDay == '5'){ weekToDate(strWeek,'5',sltDate_tmp_1); } if(weekDay == '6'){ weekToDate(strWeek,'6',sltDate_tmp_1); } } }