相关疑难解决方法(0)

我正在制作一个计时器并让它已经工作了一次.我想为它添加一个启动,停止和重置按钮.这是我的代码,就像atm一样.

    (function() {
         "use strict";
         var secondsLabel = document.getElementById('seconds'),
         minutesLabel = document.getElementById('minutes'),
         hoursLabel = document.getElementById('hours'),
         totalSeconds = 0,
         startButton = document.getElementById('start'),
         resetButton = document.getElementById('reset'),
         onOff = 0; 
         startButton.onclick = function() {
         onOff = 1;
     };
     resetButton.onclick = function() {
         totalSeconds = 0;
         onOff = 0;
     };

     if ( onOff == 1 ) {
         setInterval( setTime, 1000 );
         function setTime() {
         totalSeconds++;
         secondsLabel.innerHTML = pad( totalSeconds % 60 );
         minutesLabel.innerHTML = pad( parseInt( totalSeconds / 60 ) );
         hoursLabel.innerHTML = pad( …