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番茄时间js版

2016-01-06 00:00 686 查看

哈哈，写了一个

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style>
*{
margin: 0;
padding: 0;
}
#countDownArea{
background-color: #000;
font-size:32px;
color:#fff;
}
</style>
</head>
<body>
<input type="button" value="start" id="start">
<input type="button" value="pause" id="pause">
<input type="button" value="reset" id="reset">
<input type="button" value="setDuration" id="setDuration">
<input type="text" id="duration" value="25">
<p >the duration is <span id="desc">25</span>min</p>
<p id="countDownArea"></p>
<script>
window.onload = function(){
var oBtnStart = document.getElementById('start');
var oBtnPause = document.getElementById('pause');
var oBtnReset = document.getElementById('reset');
var oTextDuration = document.getElementById('duration');
var oBtnSetDuration = document.getElementById('setDuration');
var oCountDownArea = document.getElementById('countDownArea');
var oDesc = document.getElementById('desc');
var defaultDuration = 25*60*1000;
var timer = null;
var now = 0;

//you can set the duration manually
oBtnSetDuration.onclick = function(){
clearInterval(timer);
defaultDuration = parseInt(oTextDuration.value)*60*1000;
oCountDownArea.innerHTML = beautyTime(defaultDuration);
oDesc.innerHTML = defaultDuration;
}

oBtnStart.onclick = function(){
clearInterval(timer);
now = Date.now();
oCountDownArea.innerHTML = beautyTime(defaultDuration);
timer = setInterval(function(){
var newNow = Date.now();
var timeDelay = defaultDuration - (newNow - now);
if(timeDelay <= 0){
clearInterval(timer);
oCountDownArea.innerHTML = 0;
return;
}
oCountDownArea.innerHTML = beautyTime(timeDelay);
},500);
}

oBtnPause.onclick = function(){
clearInterval(timer);
}

oBtnReset.onclick = function(){
clearInterval(timer);
defaultDuration = 25*60*1000;
oCountDownArea.innerHTML = beautyTime(defaultDuration);
}

function beautyTime(time){
var hour = parseInt(time/3600000);
var min = parseInt((time%3600000)/60000);
var sec = parseInt((time%60000)/1000);
var other = time - hour*3600000 - min * 60000 - sec*1000;
return hour+"hour-"+min+"min-"+sec+"sec-"+other;
}

}
</script>
</body>
</html>

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