我目前有一个无效的javascript计时器。单击开始计时器按钮后,应启动两分钟计时器。这是我的代码
HTML
<div id="countdown"></div>
<div id="notifier"></div>
<input type="button" onclick="startTimer()" value="Start Timer">
JS
function startTimer() {
userInput = 120;
if(userInput.length == 0){
alert("Please enter a value");
} else {
var numericExpression = /^[0-9]+$/;
function display( notifier, str ) {
document.getElementById(notifier).innerHTML = str;
}
function toMinuteAndSecond( x ) {
return Math.floor(x/60) + ":" + x%60;
}
function setTimer( remain, actions ) {
(function countdown() {
display("countdown", toMinuteAndSecond(remain));
actions[remain] && actions[remain]();
(remain -= 1) >= 0 && setTimeout(arguments.callee, 1000);
})();
}
setTimer(userInput, {
60: function () { display("notifier", "1 Minute Remaining"); },
30: function () { display("notifier", "30 Seconds Remaining"); },
1: function () { display("notifier", " "); },
0: function () { alert( "Time Is Up. Please Sumbit Vote."); }
});
}
}
答案 0 :(得分:1)
当你在html上定义内联事件处理程序时,你必须确保你的js早期加载(就在dom加载之前):
<html>
<head>
<script src="yourScript.js"></script>
</head>
<body>
<input type="button" onclick="startTimer()" value="Start Timer">
</body>
</html>
在你的小提琴中,将其配置为加载到<head>