js获取本日、本周、本月的时间代码

2024-05-06 15:43:58

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本日时间

function showToDay(){     var Nowdate=new Date();     M=Number(Nowdate.getMonth())+1     alert(Nowdate.getMonth()+"月,"+Nowdate.getDate()+"号,星期"+Nowdate.getDay());     return Nowdate.getYear()+"-"+M+"-"+Nowdate.getDate();   }

昨天

function showTomorrow(){     var tom=new Date();     tom.setDate(tom.getDate()+1);     M=Number(tom.getMonth())+1     return tom.getYear()+"-"+M+"-"+tom.getDate();   }

本周第一天

function showWeekFirstDay()   {     var Nowdate=new Date();     var WeekFirstDay=new Date(Nowdate-(Nowdate.getDay()-1)*86400000);     M=Number(WeekFirstDay.getMonth())+1     return WeekFirstDay.getYear()+"-"+M+"-"+WeekFirstDay.getDate();   }

本周最后天

function showWeekLastDay()   {     var Nowdate=new Date();     var WeekFirstDay=new Date(Nowdate-(Nowdate.getDay()-1)*86400000);     var WeekLastDay=new Date((WeekFirstDay/1000+6*86400)*1000);     M=Number(WeekLastDay.getMonth())+1     return WeekLastDay.getYear()+"-"+M+"-"+WeekLastDay.getDate();   }

本月第一天

function showMonthFirstDay()   {     var Nowdate=new Date();     var MonthFirstDay=new Date(Nowdate.getYear(),Nowdate.getMonth(),1);     M=Number(MonthFirstDay.getMonth())+1     return MonthFirstDay.getYear()+"-"+M+"-"+MonthFirstDay.getDate();   }

本月最后一天

function showMonthLastDay()   {     var Nowdate=new Date();     var MonthNextFirstDay=new Date(Nowdate.getYear(),Nowdate.getMonth()+1,1);     var MonthLastDay=new Date(MonthNextFirstDay-86400000);     M=Number(MonthLastDay.getMonth())+1     return MonthLastDay.getYear()+"-"+M+"-"+MonthLastDay.getDate();   }function getTime(s){     var time1=document.getElementById("num1");     var time2=document.getElementById("num2");     if(s==1){       //本日时间       time1.value=showToDay();       //alert("今日:"+time1.value);       time2.value=showTomorrow();       //alert("今日:"+time2.value);     }else if(s==2){       //本周时间       time1.value=showWeekFirstDay();       //alert("本月第一天:"+time1.value);       time2.value=showWeekLastDay();       //alert("本月最后一天:"+time2.value);     }else{       //本月时间       time1.value=showMonthFirstDay();       //alert("本月第一天"+time1.value);       time2.value=showMonthLastDay();       //alert("本月最后一天"+time2.value);      }}

其他网友补充的完整测试代码

<!DOCTYPE html><html lang="en"><head>  <meta charset="UTF-8">  <title>Document</title></head><body><input type="text" id="dateFrom" value=""><input type="text" id="dateTo" value=""><script>window.onload = function() {  // getDate("thisDay");  // getDate("thisWeek");  // getDate("thisMonth");  getDate("thisYear");}    //获取推送时间段   function getDate(type){     var kssj,jssj;     var today = new Date();         var DAY = 1000*60*60*24;      if(type =="thisDay") { //当天      kssj = new Date();        jssj = new Date();      }      if(type == "thisWeek") { //本周周      kssj = getThisWeekFirstDay();//本周第一天       jssj = new Date();     }     if(type == "thisMonth") { //本月       kssj = getThisMonthFirstDay();//本月第一天       jssj = new Date();     }     if(type == "thisYear") {      kssj = getThisYearFirstDay();//本年第一天      jssj = new Date();    }    var dateFrom = kssj.format('yyyy-MM-dd');    var dateTo = jssj.format('yyyy-MM-dd');    document.getElementById("dateFrom").value=dateFrom;    document.getElementById("dateTo").value=dateTo;  }   function getThisWeekFirstDay() {    var now = new Date();    var day = now.getDay();    var week = "1234567";    var first = 0 - week.indexOf(day);    var thisWeekfirstDay = new Date;    thisWeekfirstDay.setDate (thisWeekfirstDay.getDate () + first);    return thisWeekfirstDay;  }   function getThisMonthFirstDay(){     var date=new Date();    date.setDate(1);    return date;   }   function getThisYearFirstDay() {     var currentDate=new Date();     var currentYear=currentDate.getFullYear();     var currentYearFirstDate=new Date(currentYear,0,1);    return currentYearFirstDate;  }  //data类型转string   Date.prototype.format = function(format)   {     var o = {       "M+" : this.getMonth()+1, //month       "d+" : this.getDate(),  //day       "h+" : this.getHours(),  //hour       "m+" : this.getMinutes(), //minute       "s+" : this.getSeconds(), //second       "q+" : Math.floor((this.getMonth()+3)/3), //quarter       "S" : this.getMilliseconds() //millisecond     }     if(/(y+)/.test(format)) format=format.replace(RegExp.$1,     (this.getFullYear()+"").substr(4 - RegExp.$1.length));     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;   } </script></body></html>

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