HTML中的当前时间（JavaScript）

debugcn 发表于 Dev

用户名

您好，目前我有一个显示当前时间的JavaScript。是一个来自互联网的例子。我该如何做，以使当前显示的时间比实际时间晚5分钟。真的不知道时间如何运作。试图更改一些数字，但无济于事。

目前这是代码。

 $(document).ready(function() 
{   
    var MONTHS = [ "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" ],
        DAYS = ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"];

    var date = new Date(new Date().getTime() - (5 * 60 * 1000));

    $('#date').text(DAYS[date.getDay()] + " " + date.getDate() + ' ' + MONTHS[date.getMonth()] + ' ' + date.getFullYear());

    function zeroPad(val) {
        return ((val < 10) ? "0" : "" ) + val;
    }

    setInterval(function() {
        var fiveMinutesAgo = new Date(new Date().getTime() - (5 * 60 * 1000));
        $("#hours").text(zeroPad(fiveMinutesAgo.getHours()));
        $("#min").text(zeroPad(fiveMinutesAgo.getMinutes()));
        $("#sec").text(zeroPad(fiveMinutesAgo.getSeconds()));
    }, 1000);
});

Immayankmodi

尝试减去您想要的分钟数...

setInterval( function() {
// Create a newDate() object and extract the minutes of the current time on the visitor's
var minutes = new Date().getMinutes();
minutes = minutes - 5; // here you can minus or add minutes as per your requirements
// Add a leading zero to the minutes value
$("#min").html(( minutes < 10 ? "0" : "" ) + minutes);
},1000);

更新

var currDateTime = new Date(),
    hr = currDateTime.getHours(),
    min = currDateTime.getMinutes(),
    dd = currDateTime.getDate(),
    mm = currDateTime.getMonth() + 1,
    yyyy = currDateTime.getFullYear();

//adding pad while getting singles in date or month between 0-9
if(dd < 10){ dd = '0' + dd}     if(mm < 10){ mm = '0' + mm} 

//current date and time as per UTC format
currDateTime = yyyy +'/'+ mm +'/'+ dd +" "+ hr + ':' + min + ":00";
$("#currDateTime").text(new Date(currDateTime).toUTCString());

//minus -5 minutes to actual date and time
currDateTime = yyyy +'/'+ mm +'/'+ dd + " "+ hr + ':' + (min - 5) + ":00";
$("#minusDateTime").text(new Date(currDateTime).toUTCString());

//we are now going to add +5 min to currDateTime
currDateTime = yyyy +'/'+ mm +'/'+ dd + " "+ hr + ':' + (min + 5)+ ":00";
$("#addDateTime").text(new Date(currDateTime).toUTCString());

这样，您可以根据要求向特定对象添加或减去小时，分钟，天，月，年中的任意一个。

让我知道进一步的澄清吗？

希望这会有所帮助！谢谢

这是一个JSFiddle演示

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