js 的日期加天数 或者加月

js中遇到的问题

今天在在js中遇到了时间转换的问题和当前时间加天数或者加月份的问题，我在这做了个简单的笔录

如下图

//自动显示预计锁定期开始时间 写两个是为了两个都有点击时间，都能获取到是，不出错
$(function(){
$("#full_time").blur(function(){
var onlineTime = $('input[name=predict_online_time]').val();
var fullTime = $('input[name=full_time]').val();
if(onlineTime != '' && fullTime != ''){
var now = new Date(onlineTime);
now.setDate(now.getDate()+parseFloat(fullTime));
console.log(getCurDate(now));
$('#predict_lock_time').val(getCurDate(now));
}
})
});
//获取系统当前时间
function getCurDate(strTime){
var d = new Date(strTime);
var years = d.getFullYear();
var month = add_zero(d.getMonth()+1);
var days = add_zero(d.getDate());
var hours = add_zero(d.getHours());
var minutes = add_zero(d.getMinutes());
var seconds=add_zero(d.getSeconds());
var nowDate = years+"-"+month+"-"+days+" "+hours+":"+minutes+":"+seconds;
return nowDate;
//时间加0方法
function add_zero(temp){
if(temp<10) return "0"+temp;
else return temp;
}
}
//锁定期结束时间
$(function(){
$('#lock_time').blur(function(){
var predictLockTime = $('input[name=predict_lock_time]').val()
var lockTime = $('input[name=lock_time]').val()
if(predictLockTime != '' && lockTime != ''){
$('#lock_end_time').val(getDate(predictLockTime,lockTime));
}
})
})

//添加月份
function getDate(date, monthNum){
var dateArr = date.split('-');
var year = dateArr[0]; //获取当前日期的年份
var month = dateArr[1]; //获取当前日期的月份
var day = dateArr[2]; //获取当前日期的日
var days = new Date(year, month, 0);
days = days.getDate(); //获取当前日期中的月的天数
var year2 = year;
var month2 = parseInt(month) + parseInt(monthNum);
if (month2 >12) {
year2 = parseInt(year2) + parseInt((parseInt(month2) / 12 == 0 ? 1 : parseInt(month2) / 12));
month2 = parseInt(month2) % 12;
}
var day2 = day;
var days2 = new Date(year2, month2, 0);
days2 = days2.getDate();
if (day2 > days2) {
day2 = days2;
}
if (month2 < 10) {
month2 = '0' + month2;
}
var t2 = year2 + '-' + month2 + '-' + day2;
return t2;
}