计算经过时间 [英] Compute elapsed time
问题描述
我正在寻找一些JavaScript简单的样本来计算经过的时间。我的场景是，对于JavaScript代码中的特定执行点，我想记录开始时间。而在JavaScript代码的另一个具体执行点上，我想记录一个结束时间。
I am looking for some JavaScript simple samples to compute elapsed time. My scenario is, for a specific point of execution in JavaScript code, I want to record a start time. And at another specific point of execution in JavaScript code, I want to record an end time.
然后，我想用以下形式计算经过的时间：多少日期，小时，分和秒在结束时间和开始时间之间经过，例如： 0天，2小时，3分和10秒已经过。
Then, I want to calculate the elapsed time in the form of: how many Days, Hours, Minutes and Seconds are elapsed between end time and start time, for example: 0 Days, 2 Hours, 3 Minutes and 10 Seconds are elapsed.
任何参考简单样本？ ： - ）
Any reference simple samples? :-)
提前感谢
George
推荐答案
希望这将有助于：
<!doctype html public "-//w3c//dtd html 3.2//en">
<html>
<head>
<title>compute elapsed time in JavaScript</title>
<script type="text/javascript">
function display_c (start) {
window.start = parseFloat(start);
var end = 0 // change this to stop the counter at a higher value
var refresh = 1000; // Refresh rate in milli seconds
if( window.start >= end ) {
mytime = setTimeout( 'display_ct()',refresh )
} else {
alert("Time Over ");
}
}
function display_ct () {
// Calculate the number of days left
var days = Math.floor(window.start / 86400);
// After deducting the days calculate the number of hours left
var hours = Math.floor((window.start - (days * 86400 ))/3600)
// After days and hours , how many minutes are left
var minutes = Math.floor((window.start - (days * 86400 ) - (hours *3600 ))/60)
// Finally how many seconds left after removing days, hours and minutes.
var secs = Math.floor((window.start - (days * 86400 ) - (hours *3600 ) - (minutes*60)))
var x = window.start + "(" + days + " Days " + hours + " Hours " + minutes + " Minutes and " + secs + " Secondes " + ")";
document.getElementById('ct').innerHTML = x;
window.start = window.start - 1;
tt = display_c(window.start);
}
function stop() {
clearTimeout(mytime);
}
</script>
</head>
<body>
<input type="button" value="Start Timer" onclick="display_c(86501);"/> | <input type="button" value="End Timer" onclick="stop();"/>
<span id='ct' style="background-color: #FFFF00"></span>
</body>
</html>
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