我有以下JavaScript倒计时器,我从Stackoverflow上的帖子中得到了:
function startTimer(duration, display) {
var start = Date.now(),
diff,
minutes,
seconds;
function timer() {
diff = duration - (((Date.now() - start) / 1000) | 0);
minutes = (diff / 60) | 0;
seconds = (diff % 60) | 0;
minutes = minutes < 10 ? "0" + minutes : minutes;
seconds = seconds < 10 ? "0" + seconds : seconds;
display.textContent = minutes + ":" + seconds;
if (diff <= 0) {
start = Date.now() + 1000;
}
};
timer();
setInterval(timer, 1000);
}
window.onload = function () {
var fiveMinutes = 60 * 5,
display = document.querySelector('#time');
startTimer(fiveMinutes, display);
};
我使用以下HTML来显示它:
<div class="timerConatiner">
<div class="countDownTimer"><span id="time"></span></div>
</div>
我正在使用的网页具有响应性,时间位置会根据屏幕尺寸发生很大变化。
所以我想到的最好的方法是在HTML中使用2个版本的计时器,然后使用CSS将其中一个设置为display:none
,将另一个设置为display:block
,具体取决于哪个一个我想要展示的。
问题是只显示HTML中声明的第一个,而另一个将永远不可见。第二个甚至不存在于网页上,因为它没有出现在DOM浏览器中。
我尝试使用单独的ID创建2个计时器,例如:
window.onload = function () {
var fiveMinutes = 60 * 5,
display = document.querySelector('#time');
startTimer(fiveMinutes, display);
};
window.onload = function () {
var fiveMinutes = 60 * 5,
display = document.querySelector('#time1');
startTimer(fiveMinutes, display);
};
但这不起作用。
有谁知道发生这种情况的原因?我希望当我创建具有单独ID的2个版本时,它们都会显示,但显然它们不显示?
我确信我可以创建2个版本的计时器,但这似乎并不优雅。
答案 0 :(得分:1)
工作真的很好我猜oO 添加了带有span的第二个div并将你的onload函数修改为一个高亮度位;)
function startTimer(duration, display) {
var start = Date.now(),
diff,
minutes,
seconds;
function timer() {
diff = duration - (((Date.now() - start) / 1000) | 0);
minutes = (diff / 60) | 0;
seconds = (diff % 60) | 0;
minutes = minutes < 10 ? "0" + minutes : minutes;
seconds = seconds < 10 ? "0" + seconds : seconds;
display.textContent = minutes + ":" + seconds;
if (diff <= 0) {
start = Date.now() + 1000;
}
};
timer();
setInterval(timer, 1000);
}
function toggle(){
if (document.getElementById("time").style.visibility == "hidden"){
document.getElementById("time").style.visibility = "visible";
document.getElementById("time2").style.visibility = "hidden";
}else{
document.getElementById("time2").style.visibility = "visible";
document.getElementById("time").style.visibility = "hidden";
}
}
window.onload = function () {
var fiveMinutes = 60 * 5;
var tenMinutes = 60 * 10;
display = document.querySelector('#time');
startTimer(fiveMinutes, display);
display = document.querySelector('#time2');
startTimer(tenMinutes, display);
};
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<div class="timerConatiner">
<div class="countDownTimer"><span id="time"></span></div>
<div class="countDownTimer2"><span id="time2" style ="visibility: hidden"></span></div>
</div>
<input type = "button" onclick = "toggle()" value = "Toggle"></input>
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