本节主要内容：
一例js代码，取得当前日期、前一天的日期、后一天的日期。
例子：
复制代码 代码示例:
<script>
function addByTransDate(dateParameter, num) {
var translateDate = "", dateString = "", monthString = "", dayString = "";
translateDate = dateParameter.replace("-", "/").replace("-", "/");
var newDate = new Date(translateDate);
newDate = newDate.valueOf();
newDate = newDate + num * 24 * 60 * 60 * 1000;
newDate = new Date(newDate);
//如果月份长度少于2，则前加 0 补位
if ((newDate.getMonth() + 1).toString().length == 1) {
monthString = 0 + "" + (newDate.getMonth() + 1).toString();
} else {
monthString = (newDate.getMonth() + 1).toString();
}
//如果天数长度少于2，则前加 0 补位
if (newDate.getDate().toString().length == 1) {
dayString = 0 + "" + newDate.getDate().toString();
} else {
dayString = newDate.getDate().toString();
}
dateString = newDate.getFullYear() + "-" + monthString + "-" + dayString;
return dateString;
}
function reduceByTransDate(dateParameter, num) {
var translateDate = "", dateString = "", monthString = "", dayString = "";
translateDate = dateParameter.replace("-", "/").replace("-", "/");
var newDate = new Date(translateDate);
newDate = newDate.valueOf();
newDate = newDate - num * 24 * 60 * 60 * 1000;
newDate = new Date(newDate);
//如果月份长度少于2，则前加 0 补位
if ((newDate.getMonth() + 1).toString().length == 1) {
monthString = 0 + "" + (newDate.getMonth() + 1).toString();
} else {
monthString = (newDate.getMonth() + 1).toString();
}
//如果天数长度少于2，则前加 0 补位
if (newDate.getDate().toString().length == 1) {
dayString = 0 + "" + newDate.getDate().toString();
} else {
dayString = newDate.getDate().toString();
}
dateString = newDate.getFullYear() + "-" + monthString + "-" + dayString;
return dateString;
}
//得到日期 主方法
function showTime(pdVal) {
var trans_day = "";
var cur_date = new Date();
var cur_year = new Date().format("yyyy");
var cur_month = cur_date.getMonth() + 1;
var real_date = cur_date.getDate();
cur_month = cur_month > 9 ? cur_month : ("0" + cur_month);
real_date = real_date > 9 ? real_date : ("0" + real_date);
eT = cur_year + "-" + cur_month + "-" + real_date;
if (pdVal == 1) {
trans_day = addByTransDate(eT, 1);
}
else if (pdVal == -1) {
trans_day = reduceByTransDate(eT, 1);
}
else {
trans_day = eT;
}
//处理
return trans_day;
}
调用示例：
复制代码 代码示例:
//当前日期
var tcur=showTime(0);
//前一天
var tqyt=showTime(-1);
//后一天
var thyt=showTime(1);
附，JS得到当前日期时间的小例子
复制代码 代码示例:
function currentTime() {
var d = new Date();
var vYear = d.getFullYear();
var vMon = d.getMonth() + 1;
var vDay = d.getDate();
var h = d.getHours(); www.jb200.com
var m = d.getMinutes();
var se = d.getSeconds();
var s = vYear+"-"+ (vMon < 10 ? "0" + vMon : vMon)+"-" + (vDay < 10 ? "0" + vDay : vDay)+" " + (h < 10 ? "0" + h : h)+":" + (m < 10 ? "0" + m : m)+":" + (se < 10 ? "0" + se : se);
return s;
}
