1 /* 获得某月的天数 */ 2 function getMonthDays(myMonth) { 3 var nowYear = new Date().getFullYear(); //当前年 4 var monthStartDate = new Date(nowYear, myMonth, 1); 5 var monthEndDate = new Date(nowYear, myMonth + 1, 1); 6 var days = (monthEndDate - monthStartDate) / (1000 * 60 * 60 * 24); 7 return days; 8 } 9 10 /* 获得本周的开始日期 */ 11 function getWeekStartDate() { 12 var now = new Date(); 13 var nowYear = now.getFullYear(); //当前年 14 var nowMonth = now.getMonth(); 15 var nowDay = now.getDate(); 16 var nowDayOfWeek = now.getDay(); //今天本周的第几天 17 var day = nowDay - nowDayOfWeek; 18 console.log("getWeekStartDate:nowYear=" + nowYear + ",nowMonth=" + nowMonth + ",nowDay=" + nowDay + ",nowDayOfWeek=" + nowDayOfWeek + ",day=" + day); 19 console.log("getWeekStartDate:" + new Date(nowYear, nowMonth, day)); 20 return new Date(nowYear, nowMonth, day); 21 } 22 23 /* 获得本周的结束日期 */ 24 function getWeekEndDate() { 25 var now = new Date(); 26 var nowYear = now.getFullYear(); //当前年 27 var nowMonth = now.getMonth(); 28 var nowDay = now.getDate(); 29 var nowDayOfWeek = now.getDay(); //今天本周的第几天 30 var day = nowDay + (6 - nowDayOfWeek); 31 console.log("getWeekEndDate:nowYear=" + nowYear + ",nowMonth=" + nowMonth + ",nowDay=" + nowDay + ",nowDayOfWeek=" + nowDayOfWeek + ",day=" + day); 32 console.log("getWeekEndDate:" + new Date(nowYear, nowMonth, day)); 33 return new Date(nowYear, nowMonth, day); 34 } 35 36 /* 获得上周的开始日期 */ 37 function getLastWeekStartDate() { 38 var now = new Date(); 39 var nowYear = now.getFullYear(); //当前年 40 var nowMonth = now.getMonth(); 41 var nowDay = now.getDate(); 42 var nowDayOfWeek = now.getDay(); //今天本周的第几天 43 return new Date(nowYear, nowMonth, nowDay - nowDayOfWeek - 7); 44 } 45 46 /* 获得上周的结束日期 */ 47 function getLastWeekEndDate() { 48 var now = new Date(); 49 var nowYear = now.getFullYear(); //当前年 50 var nowMonth = now.getMonth(); 51 var nowDay = now.getDate(); 52 var nowDayOfWeek = now.getDay(); //今天本周的第几天 53 return new Date(nowYear, nowMonth, nowDay - nowDayOfWeek - 1); 54 } 55 /* 获得本月的开始日期 */ 56 function getMonthStartDate() { 57 var now = new Date(); 58 var nowYear = now.getFullYear(); //当前年 59 var nowMonth = now.getMonth(); 60 return new Date(nowYear, nowMonth, 1); 61 } 62 63 /* 获得本月的结束日期 */ 64 function getMonthEndDate() { 65 var now = new Date(); 66 var nowYear = now.getFullYear(); //当前年 67 var nowMonth = now.getMonth(); 68 return new Date(nowYear, nowMonth, getMonthDays(nowMonth)); 69 } 70 71 /* 获得上月开始时间 */ 72 function getLastMonthStartDate() { 73 var lastMonthDate = new Date(); //上月日期 74 lastMonthDate.setDate(1); 75 lastMonthDate.setMonth(lastMonthDate.getMonth() - 1); 76 return lastMonthDate; 77 } 78 /* 获得上月结束时间 */ 79 function getLastMonthEndDate() { 80 var lastMonthDate = new Date(); //上月日期 81 lastMonthDate.setMonth(lastMonthDate.getMonth() - 1); 82 var lastMonth = lastMonthDate.getMonth(); 83 lastMonthDate.setDate(getMonthDays(lastMonth)); 84 return lastMonthDate; 85 } 86 87 /* 获得本季度的开始月份 */ 88 function getQuarterStartMonth() { 89 var nowMonth = new Date().getMonth(); 90 var quarterStartMonth = 0; 91 if (nowMonth < 3) { 92 quarterStartMonth = 0; 93 } 94 if (2 < nowMonth && nowMonth < 6) { 95 quarterStartMonth = 3; 96 } 97 if (5 < nowMonth && nowMonth < 9) { 98 quarterStartMonth = 6; 99 } 100 if (nowMonth > 8) { 101 quarterStartMonth = 9; 102 } 103 return quarterStartMonth; 104 } 105 106 /* 获得本季度的开始日期 */ 107 function getQuarterStartDate() { 108 var now = new Date(); 109 var nowYear = now.getFullYear(); //当前年 110 return new Date(nowYear, getQuarterStartMonth(), 1); 111 } 112 /* 获得本季度的结束日期 */ 113 function getQuarterEndDate() { 114 var now = new Date(); 115 var nowYear = now.getFullYear(); //当前年 116 var quarterEndMonth = getQuarterStartMonth() + 2; 117 return new Date(nowYear, quarterEndMonth, getMonthDays(quarterEndMonth)); 118 } 119 120 /* 获得上个季度的开始日期 */ 121 function getLastQuarterStartDate() { 122 var now = new Date(); 123 var nowYear = now.getFullYear(); //当前年 124 return new Date(nowYear, getQuarterStartMonth() - 3, 1); 125 } 126 127 /* 获得上个季度的结束日期 */ 128 function getLastQuarterEndDate() { 129 var quarterEndMonth = getQuarterStartMonth() - 1; 130 var now = new Date(); 131 now.setMonth(quarterEndMonth); 132 var nowMonth = now.getMonth(); 133 var nowYear = now.getFullYear(); 134 return new Date(nowYear, quarterEndMonth, getMonthDays(quarterEndMonth)); 135 }
UTC时间格式:
2015-05-23T16:00:00.000Z
GMT时间格式:
Sun May 24 2015 00:00:00 GMT+0800 (中国标准时间)
时间: 2024-11-02 02:43:11