function addDate() {
　　　　 var days = -1;//获取前一天，获取后一天则为正	var d = new Date("2017-09-09");	d.setDate(d.getDate() + days);	var month = d.getMonth() + 1;	var day = d.getDate();	if(month < 10) {		month = "0" + month;	}	if(day < 10) {		day = "0" + day;	}	var val = d.getFullYear() + "-" + month + "-" + day;	$(".curDate").text(val);}