Question

我制作了一个锁,放在我的网站上。时间为零;10。例如,如果时间为10:50,我只想表明10:5,我找到解决办法,但不知道如何执行。如果有更好的方法,请分享。

 var current;
window.onload = function () {

    current = new Date();

    document.getElementById("clock").innerHTML = current.getHours() + ":" +      current.getMinutes();

这是我需要的。

                if (minutes < 10)
                minutes = "0" + minutes

这是我24小时的集装箱。

    <span id="clock">&nbsp</span>

Answer 1

由于你今后可能按照同样思路将问题列入列报,我建议对 Java稿使用一种优良的说明格式功能。

Some examples:

然后,你可以做如下事情:{0:00}:{}”format(当值.getHours(),当期。


var d = new Date();
var s = d.format("hh:mm:ss tt");
// Result: "02:28:06 PM"

Answer 2

你们只能 gr住时间的头5个特征。

(new Date()).toTimeString().substr(0,5)

Answer 3

你们的问题是什么?

var minutes = (current.getMinutes() < 10?  0  :   ) + current.getMinutes();

由于你因时间关系而面临同样的问题,因此在小型公用事业功能中总结如下:

function pad(var value) {
    if(value < 10) {
        return  0  + value;
    } else {
        return value;
    }
}

And later simply:

pad(current.getHours()) + ":" + pad(current.getMinutes())

Answer 4

I like this way of doing things... Javascript add leading zeroes to date

const d = new Date();
const date = (`0${d.getMinutes()}`).slice(-2);
console.log(date); // 09;

2019 Update: But I now prefer

const d = new Date();
const date = String(d.getMinutes()).padStart(2,  0 );
console.log(date); // 09;

Answer 5

我试图这样做。它不是简短的,而是运作。

var dt = new Date();
if (parseInt(dt.getMinutes()) < 10) {minutes = "0" + dt.getMinutes();} else minutes = dt.getMinutes();
if (parseInt(dt.getSeconds()) < 10) {seconds = "0" + dt.getSeconds();} else seconds = dt.getSeconds();

var time = dt.getHours() + ":" + minutes + ":" + seconds;
document.write("Now is:" + time);

//Result: Now is: 22:47:00

我希望这将是有益的。

Answer 6


Today I m using .toLocaleTimeString(), which by default returns something like "08:30:00" - based on the users browser locale.
you can force a locale like this:
(new Date()).toLocaleTimeString("de-DE")

第2个选项参数更令人感兴趣:
(new Date()).toLocaleTimeString(
    "de-DE", 
    {
        hours: "2-digit",
        minutes: "2-digit",
        seconds: "2-digit",
    }
)

如果在备选办法中删除<代码>seconds,则只印制小时数和分钟。

So based on the original question, today I would use this:

var current;
window.onload = function () {
    current = new Date();
    document.getElementById("clock")
        .innerHTML = current.toLocaleTimeString(
            navigator.language,
            {
                hours: "2-digit",
                minute: "2-digit"
            }
        );

• 小型清洁/园:

var current;
var timeOptions = {
    hours: "2-digit",
    minute: "2-digit"
};
window.onload = function () {
    current = new Date();
    document
        .getElementById("clock")
        .innerHTML = current.toLocaleTimeString(navigator.language, timeOptions);

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