Question

如何通过简单的秒表在x秒后播放声音。我尝试了几种不同类型的秒表，但是经过x秒后，我什至无法使它执行某些操作。我使用的秒表类型具有停止和重置功能

var clsStopwatch = function() {
        // Private vars
        var startAt = 0;    // Time of last start / resume. (0 if not running)
        var lapTime = 0;    // Time on the clock when last stopped in milliseconds

        var now = function() {
                return (new Date()).getTime(); 
            }; 

        // Public methods
        // Start or resume
        this.start = function() {
                startAt = startAt ? startAt : now();
            };

        // Stop or pause
        this.stop = function() {
                // If running, update elapsed time otherwise keep it
                lapTime = startAt ? lapTime + now() - startAt : lapTime;
                startAt = 0; // Paused
            };

        // Reset
        this.reset = function() {
                lapTime = startAt = 0;
            };

        // Duration
        this.time = function() {
                return lapTime + (startAt ? now() - startAt : 0); 
            };
    };

var x = new clsStopwatch();
var $time;
var clocktimer;

function pad(num, size) {
    var s = "0000" + num;
    return s.substr(s.length - size);
}

function formatTime(time) {
    var h = m = s = ms = 0;
    var newTime = '';

    h = Math.floor( time / (60 * 60 * 1000) );
    time = time % (60 * 60 * 1000);
    m = Math.floor( time / (60 * 1000) );
    time = time % (60 * 1000);
    s = Math.floor( time / 1000 );
    ms = time % 1000;

    newTime = pad(h, 2) + ':' + pad(m, 2) + ':' + pad(s, 2) + ':' + pad(ms, 3);
    return newTime;
}

function show() {
    $time = document.getElementById('time');
    update();
}

function update() {
    $time.innerHTML = formatTime(x.time());
}

function start() {
    clocktimer = setInterval("update()", 1);
    x.start();

}

function stop() {
    x.stop();
    clearInterval(clocktimer);
}

function reset() {
    stop();
    x.reset();
    update();
}

任何秒表类型都可以，只要它具有起停重置功能

Answer 1

如果您想使用上面的代码，则可以为秒表对象编写一个包装，看起来像这样……

override

在https://codepen.io/peterpde/pen/qMjjrL工作的视图

跑表;秒表经过x秒后如何播放声音

1 个答案: