如何计算两次之间的差异

在JavaScript中，我如何计算两次之间的差异。如何计算两次之间的差异

例如：Get多少小时：从01:30到经过3:30

在下面，我从下拉菜单中获取的时间值，并把计算在两个时间之间的区别分钟。

<select name="timestart"> 
    <option value="00:00">00:00 am</option> 
    <option value="00:30">00:30 am</option> 
    <option value="01:00">01:00 am</option> 
    </select> 

Result must be like this: - 00:30-01:00 = 00:30

所以请建议解决方案。

来源

2014-11-06 Abhishek

它需要简单的数学运算，并将选项值更改为秒或分钟。 – Ravi 2014-11-06 10:17:34

你好，先生，我尝试下面的代码 var timeStart = new Date（“01/01/2007”+ x）.getHours（）; var timeEnd = new Date（“01/01/2007”+ y）.getHours（）; var hourDiff = timeEnd - timeStart;但只有小时差。 – Abhishek 2014-11-06 10:20:22

请注意，00：30-01：00 = -00：30 – axelduch 2014-11-06 10:26:53

试试这个功能如下

function diff(startTime, endTime) { 
startTime = startTime.split(":"); 
endTime = endTime.split(":"); 

var startDate = new Date(0, 0, 0, startTime[0], startTime[1], 0); 
var endDate = new Date(0, 0, 0, endTime[0], endTime[1], 0); 

var difference = endDate.getTime() - startDate.getTime(); 
var Hours = Math.floor(difference/1000/60/60); 

difference -= Hours * 1000 * 60 * 60; 
var Minutes = Math.floor(difference/1000/60); 

if (Hours < 0) 
    Hours = Hours + 24; 

return Hours + ":" + Minutes; 
}

来源

2014-11-06 10:27:46

试试这个代码：

var timeStart = new Date("01/01/2007 " + x).getHours(); 

var timeEnd = new Date("01/01/2007 " + y).getHours(); 

var hourDiff = timeEnd - timeStart; 

var timeStartMin = new Date("01/01/2007 " + x).getMinutes(); 

var timeEndMin = new Date("01/01/2007 " + y).getMinutes(); 

var minutesDiff = timeEndMin - timeStartMin; 

alert("there are :"+hourDiff+":"+minutesDiff+" elapsed");

来源

2014-11-06 10:26:46

像这样

function calcola(){ 
    var start = document.getElementById("timeStart").value 
    var end = document.getElementById("timeEnd").value 

    var startv = start.split(":") 
    var endv = end.split(":") 

    var startm = startv[0]*60 + startv[1]*1 
    var endm = endv[0]*60 + endv[1]*1 

    var diffm = endm-startm 
    var h = parseInt(diffm/60) 
    var m = diffm % 60 
    h = String(h).length == 1 ? "0"+h : h 
    m = String(m).length == 1 ? "0"+m : m 
    var ret = h + ":" + m 
    return ret 
}

有

<select name="timeStart" id="timeStart"> 
<option value="00:00">00:00 am</option> 
<option value="00:30">00:30 am</option> 
<option value="01:00">01:00 am</option> 
</select> 
<select name="timeEnd" id="timeEnd"> 
<option value="00:00">00:00 am</option> 
<option value="00:30">00:30 am</option> 
<option value="01:00">01:00 am</option> 
... 
<option value="12:00">12:00 pm</option> 
<option value="13:00">01:00 pm</option> 
<option value="13:30">01:20 pm</option> 
</select> 
<input type="button" onclick="alert(calcola())">

来源

2014-11-06 10:44:08

如何计算两次之间的差异

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