js_window_date

Posted 2020-12-19 zxy01

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<!DOCTYPE html>
<html lang="en">
<head>
    <title>Title</title>
    <meta charset="UTF-8">
<!--&lt;!&ndash;    <script src="js_file01.js"></script>&ndash;&gt;                               尽量放后body前边-->
    <style>

        #clock{
            width: 250px;
        }
    </style>
</head>
<body>

    <input type="text" id="clock">
    <input type="button" value="begin" onclick="begin_click()">
    <input type="button" value="end" onclick="end()">

<script>

    function begin() {
        var startTime=getTime();
        var ret=document.getElementById("clock");
        ret.value=startTime;
    }

    var ID;
    function begin_click() {
        // end();
        if (ID==undefined){
            begin();
            ID=setInterval(begin,1000);
        }
    }

    function end() {
        clearInterval(ID);
        ID=undefined;
    }

    function getWeek(n) {
        week=["星期日","星期一","星期二","星期三","星期四","星期五","星期六"];
        return week[n];
    }
    // alert(week1(2));

    function getTime() {
        var date_obj=new Date();
        var year=date_obj.getFullYear();
        var month=date_obj.getMonth()+1;
        var day=date_obj.getDate();
        var hour=date_obj.getHours();
        var minute=date_obj.getMinutes();
        var seconds=date_obj.getSeconds();
        var week=date_obj.getDay();

        return year+"年"+month+"月"+day+"日"+" "+hour+"时"+minute+"分"+seconds+"秒"+" "+getWeek(week)
    }
     // alert(getTime());


</script>
</body>
</html>

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