Question

我一直在关注Convert a Unix timestamp to time in JavaScript帖子以获得答案，但看起来像单位数时间（0-9）一样被解析。接受的答案

// Create a new JavaScript Date object based on the timestamp
// multiplied by 1000 so that the argument is in milliseconds, not seconds.
var date = new Date(unix_timestamp*1000);
// Hours part from the timestamp
var hours = date.getHours();
// Minutes part from the timestamp
var minutes = "0" + date.getMinutes();
// Seconds part from the timestamp
var seconds = "0" + date.getSeconds();

// Will display time in 10:30:23 format
var formattedTime = hours + ':' + minutes.substr(-2) + ':' + seconds.substr(-2);

我们得到2：3：9而不是02:03:09。如何摆脱这种行为？也有人可以详细说明如何随着时间的推移上午/下午？

Answer 1

var formattedTime = ('0' + hours).substr(-2) + ':'
                + ('0' + minutes).substr(-2) + ':' 
                + ('0' + seconds).substr(-2);

我想我会把am：pm留给你。按ctrl-shift j并在此处使用控制台中的代码进行播放

//                                 /*Year m-1 d h m s ms*/
unix_timestamp = Math.floor(new Date(2016,0,  1,5,5,0,0)/1000)

这可能更容易理解。我把它保持得更近了

// Create a new JavaScript Date object based on the timestamp
// multiplied by 1000 so that the argument is in milliseconds, not seconds.
var date = new Date(unix_timestamp*1000);
// Hours part from the timestamp
var amPm = date.getHours() >= 12?'AM':'PM'
// % is modulo which is the remainder after division || will change 0 to 12
// because 0 is falsey everything else will be left as it is
var hours = ("0" + ((date.getHours() % 12)||12)).substr(-2)
// Minutes part from the timestamp
var minutes = ("0" + date.getMinutes()).substr(-2)
// Seconds part from the timestamp
var seconds = ("0" + date.getSeconds()).substr(-2)

// Will display time in 10:30:23 format
var formattedTime = hours + ':' + minutes+ ':' + seconds + ' '+ amPm

Answer 2

我认为你必须摆脱substr - 部分，因为价值应该已经是正确的了。

注意：您需要检查值是否已超过9，因为当它高于9时，您不需要附加任何内容。

示例

var d = new Date() //Is in milliseconds var hours = d.getHours(); var minutes = d.getMinutes(); var seconds = d.getSeconds(); console.log(hours + ":" + ((minutes < 10) ? "0" + minutes : minutes) + ":" + ((seconds < 10) ? "0" + seconds : seconds))

我想补充一点，使用像moment.js这样的好库可以轻松解决这些问题。

将unix时间戳转换为javascript日期时间的最佳方法

2 个答案: