JS日期比较大小 给定时间和持续时间计算最终时间

   /* 往指定时间字符串上加时间间隔,获得新的时间字符串
 * startDateStr:开始时间字符串,类似"2015-7-20 17:26:00"
 * durationNumStr:持续时间数
 * durationTypeStr:持续时间类型
 * 返回类似:2015-7-20 17:26:00
 *
 *
 */
function getEndDate(startDateStr, durationNumStr, durationTypeStr) {
 
    var startDate = new Date(startDateStr.replace("-", "/").replace("-",
            "/"));
    var duration_num = parseInt(durationNumStr);
 
    var endDate = "";
    if (durationTypeStr == "min") {
        endDate = new Date(startDate.setMinutes(startDate.getMinutes()
                + duration_num));
    }
    if (durationTypeStr == "h") {
        endDate = new Date(startDate.setHours(startDate.getHours()
                + duration_num));
    }
    if (durationTypeStr == "d") {
        endDate = new Date(startDate.setDate(startDate.getDate()
                + duration_num));
    }
    if (durationTypeStr == "w") {
        endDate = new Date(startDate.setDate(startDate.getDate()
                + duration_num * 7));
    }
    if (durationTypeStr == "m") {
        endDate = new Date(startDate.setMonth(startDate.getMonth()
                + duration_num));
    }
    if (durationTypeStr == "y") {
        endDate = new Date(startDate.setFullYear(startDate.getFullYear()
                + duration_num));
    }
 
    var year = endDate.getFullYear();
    var month = endDate.getMonth() + 1 < 10 ? "0"
            + (endDate.getMonth() + 1) : endDate.getMonth() + 1;
    var date = endDate.getDate() < 10 ? "0" + endDate.getDate() : endDate
            .getDate();
    var hour = endDate.getHours() < 10 ? "0" + endDate.getHours() : endDate
            .getHours();
    var minute = endDate.getMinutes() < 10 ? "0" + endDate.getMinutes()
            : endDate.getMinutes();
    var second = endDate.getSeconds() < 10 ? "0" + endDate.getSeconds()
            : endDate.getSeconds();
    var endDateStr = year + "-" + month + "-" + date + " " + hour + ":"
            + minute + ":" + second;
    return endDateStr;
}
 
/**
 * 计算开始时间是否小于结束时间,小于等于返回true,否则false
 * startDateStr:开始时间字符串
 * endDateStr:结束时间字符串
 * 返回:true或false
 *
 *
 */
function chkTime(startDateStr, endDateStr) {
    //计划截止时间
    var startDate = new Date(startDateStr.replace("-", "/").replace("-",
            "/"));
    //计划详细项的截止时间
    var endDate = new Date(endDateStr.replace("-", "/").replace("-", "/"));
    if (startDate <= endDate) {
        return true;
    } else {
        return false;
    }
}

 

posted @ 2016-03-22 11:33  疯子110  阅读(1095)  评论(0编辑  收藏  举报