项目经验：js实现根据时段获取时间段

//根据选择时段得到时间段
function getTimeDuring(xzsd){
//最近一天
if(xzsd=="1"){
var date=new Date();
return date.getFullYear()+"年"+(date.getMonth()+1)+"月"+date.getDate()+"日";
//最近一周
}else if(xzsd=="2"){
//获取当前星期X(0-6,0代表星期天)
var firstDateOfWeek=new Date();
var lastDateOfWeek=new Date();
var week = firstDateOfWeek.getDay();
firstDateOfWeek.setDate(firstDateOfWeek.getDate()+1-week);
lastDateOfWeek.setDate(lastDateOfWeek.getDate()+7-week);
return firstDateOfWeek.getFullYear()+"年"+(firstDateOfWeek.getMonth()+1)+"月"+firstDateOfWeek.getDate()+"日-"+
lastDateOfWeek.getFullYear()+"年"+(lastDateOfWeek.getMonth()+1)+"月"+lastDateOfWeek.getDate()+"日";;
//最近一月
}else if(xzsd=="3"){
var date=new Date();
//获取当前月份(0-11,0代表1月)
var month = date.getMonth()+1;
if(month==2){
return date.getFullYear()+"年"+(date.getMonth()+1)+"月1日-"+date.getFullYear()+"年"+(date.getMonth()+1)+"月28日";
}else if(month==1||month==3||month==5||month==7||month==8||month==10||month==12){
return date.getFullYear()+"年"+(date.getMonth()+1)+"月1日-"+date.getFullYear()+"年"+(date.getMonth()+1)+"月31日";
}else if(month==4||month==6||month==9||month==11){
return date.getFullYear()+"年"+(date.getMonth()+1)+"月1日-"+date.getFullYear()+"年"+(date.getMonth()+1)+"月30日";
}
//最近一年
}else if(xzsd=="4"){
var date=new Date();
return date.getFullYear()+"年"+"1月1日-"+date.getFullYear()+"年"+"12月31日";
}
}