var dateObj = this.getLastMonth();
this.dateTime = [new Date(dateObj.last).Format("yyyyMMdd"), new Date(dateObj.now).Format("yyyyMMdd")];
getLastMonth() {
var now = new Date();
var year = now.getFullYear();//getYear()+1900=getFullYear()
var month = now.getMonth() + 1;//0-11表示1-12月
var day = now.getDate();
var dateObj = {};
if (parseInt(month) < 10) {
month = "0" + month;
}
if (parseInt(day) < 10) {
day = "0" + day;
}
dateObj.now = year + '-' + month + '-' + day;
if (parseInt(month) == 1) {//如果是1月份,则取上一年的12月份
dateObj.last = (parseInt(year) - 1) + '-12-' + day;
return dateObj;
}
var preSize = new Date(year, parseInt(month) - 1, 0).getDate();//上月总天数
if (preSize < parseInt(day)) {//上月总天数<本月日期,比如3月的30日,在2月中没有30
dateObj.last = year + '-' + month + '-01';
return dateObj;
}
if (parseInt(month) <= 10) {
dateObj.last = year + '-0' + (parseInt(month) - 1) + '-' + day;
return dateObj;
} else {
dateObj.last = year + '-' + (parseInt(month) - 1) + '-' + day;
return dateObj;
}
},