javascript对时间的处理

   function getMainHead() {

            $("LabelWelcome").innerHTML = GetWelcomeByTime() + "        今天是：" + GetSimpleDate() + "  " + GetWeekDay() + "     " + GetCnDate() + SolarTerm(new Date());

        }

function GetWelcomeByTime() {

    var now = new Date();

    var hour = now.getHours();

    var hello = "";

 

    if (hour < 4) {

        hello = "夜深了";

    }

    else if (hour < 7) {

        hello = "早安";

    }

    else if (hour < 9) {

        hello = "早上好";

    }

    else if (hour < 12) {

        hello = "上午好";

    }

    else if (hour < 14) {

        hello = "中午好";

    }

    else if (hour < 17) {

        hello = "下午好";

    }

    else if (hour < 19) {

        hello = "您好";

    }

    else if (hour < 22) {

        hello = "晚上好";

    }

    else {

        hello = "夜深了";

    }

 

    return hello;

}

function GetSimpleDate() {

    var today = new Date();

    var date = (today.getYear() < 100 ? today.getYear() + 1900 : today.getYear()) + "年" + (today.getMonth() + 1) + "月" + today.getDate() + "日";

    return date;

}

function GetWeekDay() {

    var today = new Date();

    var weeks = new Array("星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六");

    return weeks[today.getDay()];

}

//获取农历日期

function GetCnDate() {

    var today = new Date();

    return CnDateofDateStr(today);

}

function CnDateofDateStr(DateGL) {

    if (CnMonthofDate(DateGL) == "零月") return "　请调整您的计算机日期!";

    else return "农历：" + CnYearofDate(DateGL) + " " + CnMonthofDate(DateGL) + CnDayofDate(DateGL);

}

function SolarTerm(DateGL) {

    var SolarTermStr = new Array(

        "小寒", "大寒", "立春", "雨水", "惊蛰", "春分",

        "清明", "谷雨", "立夏", "小满", "芒种", "夏至",

        "小暑", "大暑", "立秋", "处暑", "白露", "秋分",

        "寒露", "霜降", "立冬", "小雪", "大雪", "冬至");

    var DifferenceInMonth = new Array(

        1272060, 1275495, 1281180, 1289445, 1299225, 1310355,

        1321560, 1333035, 1342770, 1350855, 1356420, 1359045,

        1358580, 1355055, 1348695, 1340040, 1329630, 1318455,

        1306935, 1297380, 1286865, 1277730, 1274550, 1271556);

    var DifferenceInYear = 31556926;

    var BeginTime = new Date(1901 / 1 / 1);

    BeginTime.setTime(947120460000);

    for (; DateGL.getYear() < BeginTime.getYear(); ) {

        BeginTime.setTime(BeginTime.getTime() - DifferenceInYear * 1000);

    }

    for (; DateGL.getYear() > BeginTime.getYear(); ) {

        BeginTime.setTime(BeginTime.getTime() + DifferenceInYear * 1000);

    }

    for (var M = 0; DateGL.getMonth() > BeginTime.getMonth(); M++) {

        BeginTime.setTime(BeginTime.getTime() + DifferenceInMonth[M] * 1000);

    }

    if (DateGL.getDate() > BeginTime.getDate()) {

        BeginTime.setTime(BeginTime.getTime() + DifferenceInMonth[M] * 1000);

        M++;

    }

    if (DateGL.getDate() > BeginTime.getDate()) {

        BeginTime.setTime(BeginTime.getTime() + DifferenceInMonth[M] * 1000);

        M == 23 ? M = 0 : M++;

    }

    var JQ;

    if (DateGL.getDate() == BeginTime.getDate()) {

        JQ = "　 今天是<font color='#FF9999'><b>" + SolarTermStr[M] + "</b></font>";

    } 

    else {

        JQ = " " 

    }

    return JQ;

}