js获取最近几天的日期的方法
如:最近3天、最近7天、最近一月的日期
//获取最近日期
//getDay(0)当天日期
//getDay(-6))6天前日期
function getDay(day){
var today = new Date();
var targetday_milliseconds=today.getTime() + 1000*60*60*24*day;
today.setTime(targetday_milliseconds); //注意,这行是关键代码
var tYear = today.getFullYear();
var tMonth = today.getMonth();
var tDate = today.getDate();
tMonth = doHandleMonth(tMonth + 1);
tDate = doHandleMonth(tDate);
return tYear+"-"+tMonth+"-"+tDate;
}
function doHandleMonth(month){
var m = month;
if(month.toString().length == 1){
m = "0" + month;
}
return m;
}
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