如何使用JavaScript将秒转换为HH-MM-SS字符串?
当前回答
你也可以使用下面的代码:
int ss = nDur%60;
nDur = nDur/60;
int mm = nDur%60;
int hh = nDur/60;
其他回答
var sec_to_hms = function(sec){
var min, hours;
sec = sec - (min = Math.floor(sec/60))*60;
min = min - (hours = Math.floor(min/60))*60;
return (hours?hours+':':'') + ((min+'').padStart(2, '0')) + ':'+ ((sec+'').padStart(2, '0'));
}
alert(sec_to_hms(2442542));
我认为标准Date对象的任何内置特性都不会以一种比自己做数学更方便的方式为您做这件事。
hours = Math.floor(totalSeconds / 3600);
totalSeconds %= 3600;
minutes = Math.floor(totalSeconds / 60);
seconds = totalSeconds % 60;
例子:
let totalSeconds = 28565; let hours = Math.floor(totalSeconds / 3600); totalSeconds %= 3600; let minutes = Math.floor(totalSeconds / 60); let seconds = totalSeconds % 60; console.log("hours: " + hours); console.log("minutes: " + minutes); console.log("seconds: " + seconds); // If you want strings with leading zeroes: minutes = String(minutes).padStart(2, "0"); hours = String(hours).padStart(2, "0"); seconds = String(seconds).padStart(2, "0"); console.log(hours + ":" + minutes + ":" + seconds);
试试这个:
function toTimeString(seconds) {
return (new Date(seconds * 1000)).toUTCString().match(/(\d\d:\d\d:\d\d)/)[0];
}
var timeInSec = "661"; //even it can be string
String.prototype.toHHMMSS = function () {
/* extend the String by using prototypical inheritance */
var seconds = parseInt(this, 10); // don't forget the second param
var hours = Math.floor(seconds / 3600);
var minutes = Math.floor((seconds - (hours * 3600)) / 60);
seconds = seconds - (hours * 3600) - (minutes * 60);
if (hours < 10) {hours = "0"+hours;}
if (minutes < 10) {minutes = "0"+minutes;}
if (seconds < 10) {seconds = "0"+seconds;}
var time = hours+':'+minutes+':'+seconds;
return time;
}
alert("5678".toHHMMSS()); // "01:34:38"
console.log(timeInSec.toHHMMSS()); //"00:11:01"
我们可以把这个函数写得更短更清晰,但这会降低可读性,所以我们要把它写得尽可能简单,尽可能稳定。
或者你可以在这里检查一下:
您尝试过向Date对象添加秒数吗?
Date.prototype.addSeconds = function(seconds) {
this.setSeconds(this.getSeconds() + seconds);
};
var dt = new Date();
dt.addSeconds(1234);
一个示例: https://jsfiddle.net/j5g2p0dc/5/
更新: 样本链接缺失,所以我创建了一个新的。