stop interval inside a function

Question

I have this script that runs a soccer game clock, when I click the start button everything is working properly but I can't stop the clock.

 var count; function gameClock() { var minutesLabel = document.getElementById("minutes"); var secondsLabel = document.getElementById("seconds"); var totalSeconds = 0; var count = setInterval(function() { setTime() }, 1000); function setTime() { ++totalSeconds; secondsLabel.innerHTML = pad(totalSeconds % 60); minutesLabel.innerHTML = pad(parseInt(totalSeconds / 60)); } function pad(val) { var valString = val + ""; if (valString.length < 2) { return "0" + valString; } else { return valString; } } } //Start Stop Game Clock $(document).on('click', '#f_start', function() { $("#half_name").text('FIRST HALF'); gameClock(); // localStorage.setItem('first_half_click', getTime()); // localStorage.setItem('half', 1); }) $(document).on('click', '#f_stop', function() { clearInterval(count); })

 <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script> <div class="col-2"> <button class="btn btn-success" id="f_start"> START</button> </div> <div class="col-2"> <button class="btn btn-danger" id="f_stop"> STOP</button> </div>

Answer 1

You are redeclaring the count global variable inside the gameClock method which means it's scope is only in that function. change the assignment to use the global count variable instead of the useless local variable.

 var count = setInterval(function() { setTime() }, 1000); //to count = setInterval(function() { setTime() }, 1000);