Javascript 使用 moment.js 和 setInterval 的动态日期和时间

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时间:2020-08-24 02:01:08  来源:igfitidea点击:

Dynamic date and time with moment.js and setInterval

javascriptjquerysetintervalmomentjs

提问by bchr

I'm trying to find out how I can display dynamic date and time using moment.js.

我试图找出如何使用moment.js显示动态日期和时间。

Apparently I can't figure out to use setInterval properly.

显然我不知道如何正确使用 setInterval 。

If possible I'd prefer not to use jQuery as moment.js dosn't need it.

如果可能的话,我不想使用 jQuery,因为 moment.js 不需要它。

Here's what I have so far: http://jsfiddle.net/37fLF/2/.

这是我到目前为止所拥有的:http: //jsfiddle.net/37fLF/2/

$(document).ready(function () {
    var datetime = $('#datetime'),
        date = moment(new Date()),
        update = function(){
            datetime.html(date.format('dddd, MMMM Do YYYY, h:mm:ss a'));
        };
    update();
    setInterval(update, 1000);
});?

回答by MilkyWayJoe

I've made a few modifications in your code:

我对你的代码做了一些修改:

Note that the method update is now outside the readyevent handler

请注意,方法更新现在在ready事件处理程序之外

code:

代码:

var datetime = null,
        date = null;

var update = function () {
    date = moment(new Date())
    datetime.html(date.format('dddd, MMMM Do YYYY, h:mm:ss a'));
};

$(document).ready(function(){
    datetime = $('#datetime')
    update();
    setInterval(update, 1000);
});

working demo: jsfiddle

工作演示:jsfiddle

回答by bchr

Again, thanks for your answers. The code I ended up with follows. (Note danish i18n)

再次感谢您的回答。我最终得到的代码如下。(注意丹麦 i18n)

moment.lang('da');

var datetime = null, date = null;

var datetime_update = function() {
  date = moment(new Date());
  datetime.html(date.format('[Lige nu: ] dddd [d.] Do MMMM YYYY [kl.] HH:mm:ss'));
};

$(document).ready(function() {
  datetime = $('#datetime');
  datetime_update();
  setInterval(datetime_update, 1000);
});

EDIT: Here nine months after I asked this quesiton I figured out this way to do it without jQuery (as I initially asked). Here it is:

编辑:在我问这个问题九个月后,我想出了不用 jQuery 的方法(正如我最初问的那样)。这里是:

function date_time() {
  now = moment().format('dddd [d.] Do MMMM YYYY [kl.] HH:mm:ss');
  document.getElementById('timer').innerHTML = now;
  setTimeout(function () { date_time(); }, 1000);
}
date_time();

And then of course use it with an HTML ID like:

然后当然可以将它与 HTML ID 一起使用,例如:

<span id="timer"></span>

回答by Halcyon

Put

date = moment(new Date());

inside the update function. Now you're just printing the same date every second ;)

在更新函数里面。现在你只是每秒打印相同的日期;)

回答by Muhammad Hamayoon

This is how it goes by me and its working u can check it here

这就是我的工作方式及其工作方式,您可以在此处查看

HTML

< asp:Label ID="Label1" runat="server" Text='' >

< asp:Label ID="Label1" runat="server" Text='' >

JavaScript
< script language="javascript" type="text/javascript">
function date_time() 
{
var dt = new Date();
document.getElementById('<%=Label1.ClientID%>').innerHTML = dt;
setTimeout(function () { date_time(); }, 1000);
}
date_time();
< /script>