暂停工作不正确。 怎么修？

Question

I have a code that should implement stopwatch. It works, but if I start stopwatch after pressed pause or reset button, then time is ticking too fast. How can I fix it?

Resolved.

Answer 1

Here's a trimmed down example of how one could store an interval id and then use it to clear the interval:

 let SECONDS = 0; let intervalId; function run() { intervalId = setInterval(main, 1000) } function pause() { clearInterval(intervalId) } function reset() { clearInterval(intervalId) SECONDS = 0 update_display() } function update_display() { document.getElementById("seconds").innerText = SECONDS } function main() { SECONDS++ update_display() }

 <div class="display-time"> <span id="seconds">0</span> </div> <!-- buttons start, stop and reset --> <div class="button-group"> <button id="btnRun" onclick="run()">RUN</button> <button id="btnPause" onclick="pause()">PAUSE</button> <button id="btnReset" onclick="reset()">RESET</button> </div>