嗨,我正在制作一个涉及计数计时器的游戏。我希望游戏开始单击计时器按钮时开始游戏,但是目前我的计时器只是单独开始。我看过一些已经回答的几个不同的问题,但是他们对我没有工作。有什么建议吗?
var seconds = 60;
function secondPassed() {
var minutes = Math.round((seconds - 30)/60);
var remainingSeconds = seconds % 60;
if (remainingSeconds < 10) {
remainingSeconds = "0" + remainingSeconds;
}
document.getElementById('countdown').innerHTML = minutes + ":" + remainingSeconds;
if (seconds == 0) {
clearInterval(countdownTimer);
document.getElementById('countdown').innerHTML = "Times Up!!!";
} else {
seconds--;
}
}
var countdownTimer = setInterval('secondPassed()', 1000);
我想您在单击按钮上调用countdownTimer
,如果是,则必须在功能中包装setInterval
。
var countdownTimer = setInterval('secondPassed()', 1000); //Without the wrapper it simply executes, when JS reaches this line
应该是
var countdownTimer = function(){setInterval('secondPassed()', 1000);}
将您的setInterval添加到按钮的单击侦听器:
var btn = document.getElementById('BUTTON_ID');
btn.addEventListener('click', function() {
setInterval('secondPassed()', 1000);
});
JSFIDDLE DEMO