[英]How to reset stop watch for multiple stop watch time?
我正在尝试通过锚标记使用多个秒表计时器。我已经成功完成,但是我无法添加诸如单击第一个计时器的功能,当单击第二个计时器时,它将从零开始计时,单击第一个计时器的值将为零,第二个将从零开始计时。我在下面给出我的工作代码:
JS:
var digit=0;
var hrs = 0;
var min=0;
var time;
var timer_is_on=0;
var id;
function timer(id){
//[Old] - this should be placed after you increment digit
// document.getElementById("secs").innerHTML = digit
//alert("I am testing value"+id);
//[New]
// get the numerical value for seconds,minutes,hours
digit = parseInt(document.getElementById("secs"+id).innerHTML);
min = parseInt(document.getElementById("mins"+id).innerHTML);
hrs = parseInt(document.getElementById("hrs"+id).innerHTML);
// increment;
digit=digit+1;
if(digit>"59"){
min = parseInt(min)+1;
// why is this code here
var count = min.toString().length;
digit=0;
}
// [old] checking if second is greater than 59 and incrementing hours
// if(digit>"59"){
// [new] check if minute is greater than 59
if(min > "59"){
hrs=parseInt(hrs)+1;
digit=0;
min=0; // minute should be reset as well
}
// set the values after all processing is done
document.getElementById("secs"+id).innerHTML = format(digit);
document.getElementById("mins"+id).innerHTML= format(min);
document.getElementById("hrs"+id).innerHTML=format(hrs);
}
function activate(id){
if(!timer_is_on){
timer_is_on=1;
// time = setTimeout("timer()",1000) will only call it once , use setInterval instead
time=setInterval("timer("+id+")",1000);
}
else {
timer_is_on=0;
clearInterval(time); // clear the timer when the user presses the button again and reset timer_is_on
}
return id;
}
// left pad zero if it is less than 9
function format(time){
if(time > 9)
return time;
else return "0"+time;
}
我使用的HTML代码是:
<a href="#" onclick="activate(1)">Click here to start the timer</a>
<span id="hrs1" >00</span>:<span id="mins1" >00</span>:<span id="secs1">00</span></strong>
<br/>
<a href="#" onclick="activate(2)">Click here to start the timer</a>
<span id="hrs2" >00</span>:<span id="mins2" >00</span>:<span id="secs2">00</span>
这是我正在工作的js小提琴演示: http : //jsfiddle.net/EPtFW/1/
因为您使用相同的方法activate()启动第二个计时器,所以如果计时器已在运行,它将使第一个计时器为零。
解决方案是“您必须为多个计时器维护多个唯一的计时器ID”
例如,假设您有T1和T2计时器开始计时;
var timerMap={};
timerMap[createUniqueId for T1] = setInterval();
timerMap[createUniqueId for T2] = setInterval();
to clear timers
clearInterval(timerMap[createUniqueId for T1]);
clearInterval(timerMap[createUniqueId for T2]);
在您的情况下,您必须具有createUniqueId,并将其添加到timerMap应该在activate()方法中。 他们将独立工作。
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.