我正在用计时器建立一个能力倾向测试。我想在倒数结束时显示超时 的Javascript HTML div显示 答案 0 :(得分:0) 好的,事情是,你有这段javascript代码: 在底部,您有一个“if”语句。 将if语句移动到“format”函数中,如下所示: 您的代码,就目前的方式而言,并未对每个代码执行检查。 此外,您没有检查“0”。值应为“00:00” 当然,您可以移动支票以将div显示给tick事件,但这完全取决于您。<script language="JavaScript" type="text/javascript">
function CountDownTimer(duration, granularity) {
this.duration = duration;
this.granularity = granularity || 1000;
this.tickFtns = [];
this.running = false;
}
CountDownTimer.prototype.start = function() {
if (this.running) {
return;
}
this.running = true;
var start = Date.now(),
that = this,
diff, obj;
(function timer() {
diff = that.duration - (((Date.now() - start) / 1000) | 0);
if (diff > 0) {
setTimeout(timer, that.granularity);
} else {
diff = 0;
that.running = false;
}
obj = CountDownTimer.parse(diff);
that.tickFtns.forEach(function(ftn) {
ftn.call(this, obj.minutes, obj.seconds);
}, that);
}());
};
CountDownTimer.prototype.onTick = function(ftn) {
if (typeof ftn === 'function') {
this.tickFtns.push(ftn);
}
return this;
};
CountDownTimer.prototype.expired = function() {
return !this.running;
};
CountDownTimer.parse = function(seconds) {
return {
'minutes': (seconds / 60) | 0,
'seconds': (seconds % 60) | 0
};
};
window.onload = function () {
var display = document.querySelector('#time'),
timer = new CountDownTimer(5),
timeObj = CountDownTimer.parse(5);
format(timeObj.minutes, timeObj.seconds);
timer.onTick(format);
document.querySelector('button').addEventListener('click', function () {
timer.start();
});
function format(minutes, seconds) {
minutes = minutes < 10 ? "0" + minutes : minutes;
seconds = seconds < 10 ? "0" + seconds : seconds;
display.textContent = minutes + ':' + seconds;
}
if(display.textContent == 0){
document.querySelector("#div1").style.display="block";
}
};
</script>
<button>Start Count Down</button>
<div>Registration closes in <span id="time"></span> minutes!</div>
<div id="div1" style="display:none;" ><p>Hello</p></div>
1 个答案:
Date.now()
window.onload = function () {
var display = document.querySelector('#time'),
timer = new CountDownTimer(5),
timeObj = CountDownTimer.parse(5);
format(timeObj.minutes, timeObj.seconds);
timer.onTick(format);
document.querySelector('button').addEventListener('click', function () {
timer.start();
});
function format(minutes, seconds) {
minutes = minutes < 10 ? "0" + minutes : minutes;
seconds = seconds < 10 ? "0" + seconds : seconds;
display.textContent = minutes + ':' + seconds;
}
if(display.textContent == 0){
document.querySelector("#div1").style.display="block";
}