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[英]Jquery: setTimeout Timer and Corresponding High Score List Do Not Match
[英]Stopwatch / Timer, save var and show in high score list (HTML, JS)
我正在構建一個需要計時器的Web應用程序:在特定事件下啟動,停止和重置。 在這些之后,我想將變量保存在“高分”列表中。
該應用程序應與AR眼鏡配合使用以進行維護工作。
該應用程序應包括應測量作業持續時間的功能。
這是與我的問題有關的代碼:
JS:
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;
var ourTime = 3;
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() {
$time.innerHTML = formatTime(x.time());
}
function start() {
clocktimer = setInterval("update()", 1);
x.start();
}
function stop() {
x.stop();
clearInterval(clocktimer);
}
function reset() {
stop();
x.reset();
update();
}
HTML:
<head>
<meta charset="UTF-8">
<title>Stopwatch</title>
</head>
<body onload="show();">
<div>Time: <span id="time"></span></div>
<input type="button" value="start" onclick="start();">
<input type="button" value="stop" onclick="stop();">
<input type="button" value="reset" onclick="reset()">
</body>
<div id="result"></div>
<script>
if (typeof(Storage) != "undefined") {
// Store
localStorage.setItem("lastname", ourTime);
// Retrieve
document.getElementById("result").innerHTML = localStorage.getItem("lastname");
} else {
document.getElementById("result").innerHTML = "Sorry, your browser does not support Web Storage...";
}
</script>
在此示例中,值3
已保存並正確顯示,但是我無法顯示秒表停止后的時間。
我想到的最好的是:
var ourTime = formatTime(X)
這將以正確的格式顯示數字,但該值始終為00:00:00或未定義。 如何獲得正確的秒表停止值?
問題是您嘗試更新未定義的字段; 在update()中調用的$ time值設置為NULL。 為了解決這個問題,我在start()中聲明了$ time,現在看來可以了。 另外,您根本沒有使用show()函數,因此就象localStorage一樣,我把它省略了,因為它對問題不起作用,而且xy沒有定義,因此對我們來說只是一個錯誤。
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; var ourTime = 3; 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 update() { $time.innerHTML = formatTime(x.time()); } function start() { //Declare $time here, so update() knows which field it needs to update $time = document.getElementById('time'); clocktimer = setInterval("update()", 41); x.start(); } function stop() { x.stop(); clearInterval(clocktimer); } function reset() { stop(); x.reset(); update(); }
<div>Time: <span id="time"></span></div> <input type="button" value="start" onclick="start();"> <input type="button" value="stop" onclick="stop();"> <input type="button" value="reset" onclick="reset()">
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