在javascript中有多个倒数计时器事件间隔 [英] Having multiple countdown timer events intervals in javascript

问题描述

我正在尝试使用javascript创建多个倒计时器。
面对显示javascript的时间和setInterval cleartInterval事件的问题。
我的代码在jsfiddle：这里

I am trying to create a multiple countdown timers using javascript. Facing issues with displaying the time and setInterval cleartInterval events of javascript. My code is on jsfiddle: here

Javascript：

Javascript:

function secondPassed(row, secs) {
    var seconds = secs;
    var minutes = Math.round((seconds - 30)/60);
    var remainingSeconds = seconds % 60;
    if (remainingSeconds < 10) {
        remainingSeconds = "0" + remainingSeconds;  
    }
    document.getElementById('countdown'+row).innerHTML = minutes + ":" + remainingSeconds;
    if (seconds == 0) {
        clearInterval(countdownTimer[row]);
        document.getElementById('countdown'+row).innerHTML = "Buzz Buzz";
    } else {
        seconds--;
    }
}

var countdownTimer = [];

function timer(row, min) { 
    var seconds = min * 60;
    countdownTimer[row] = setInterval('secondPassed('+row+','+seconds+')', 1000);
}


timer(1, 3);
timer(2, 2);
timer(3, 5);

HTML：
计时器1：< span id = countdown1class =timer>< / span>
< br />
计时器2：< span id =countdown2class =timer>< / span>
< br />
计时器3：< span id =countdown3class =timer>< / span>

推荐答案

这里有几个问题。

首先，使用参数设置定时器功能的语法是错误的。请参阅在setInterval函数中传递参数。

First, the syntax for setting a timer function with parameters is wrong. See Pass parameters in setInterval function.

其次，您需要将每个计时器的剩余秒数存储在某处。

Second, you need to store the remaining seconds for each timer somewhere.

var timerData = [];

function secondPassed(row) {
    var seconds = timerData[row].remaining;
    var minutes = Math.round((seconds - 30) / 60);
    var remainingSeconds = seconds % 60;
    if (remainingSeconds < 10) {
        remainingSeconds = "0" + remainingSeconds;
    }
    document.getElementById('countdown' + row).innerHTML = minutes + ":" + remainingSeconds;
    if (seconds == 0) {
        clearInterval(timerData[row].timerId);
        document.getElementById('countdown' + row).innerHTML = "Buzz Buzz";
    } else {
        seconds--;
    }
    timerData[row].remaining = seconds;
}

function timer(row, min) {
    timerData[row] = {
        remaining: min * 60,
        timerId: setInterval(function () { secondPassed(row); }, 1000)
    };
}

timer(1, 3);
timer(2, 2);
timer(3, 5);

工作小提琴： http://jsfiddle.net/835xehna/4/

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