//初始化一个时间date=2016-12-13,通过函数计算所在月和周的起始时间 function month(y,m,d){ var now = new Date(y,m-1,d); var year = now.getFullYear(); var month = now.getMonth()+1; var date = now.getDate(); var result; if(month == 2){ if(year@0 == 0 || (year%4 == 0 && year0 != 0)){ result =29; }else{ result =28; } }else{ switch (month){ case 4: case 6: case 8: case 9: case 11: result = 30; break; default: result = 31; break; } } return "本月开始日期是" + year + "-" + month + "-01,结束日期是" + year + "-" + month + "-" +result; } var x = month(2017,2,13); console.log(x); function week(y,m,d){ var now = new Date(y,m-1,d); var day = now.getDay(); if(day==0){ day = 7; } var time = now.getTime(); var startTime = time - (day-1)*24*60*60*1000; var endTime = time + (7 - day)*24*60*60*1000; var start = new Date(startTime).toLocaleDateString().split("/"); var end = new Date(endTime).toLocaleDateString().split("/"); if(start[1]<10){ start[1] = "0"+start[1]; } if(start[2]<10){ start[2] = "0"+start[2]; } if(end[1]<10){ end[1] = "0"+end[1]; } if(end[2]<10){ end[2] = "0"+end[2]; } console.log("本周开始的日期"+start[0]+"-"+start[1]+"-"+start[2]+",结束日期"+end[0]+"-"+end[1]+"-"+end[2]); } week(2016,2,5);
