JSFiddle - React, Tailwind, and code Playground

by ChangJoo Park

HTML

<script>
  var interval = -1;

  function startInterval() {
    if (interval > -1) {
      console.log('이미 시작됨')
      return
    }

    interval = setInterval(function() {
      console.log('메소드:)')
      console.log('hello => ', interval)
    }, 1000)
  }

  function stopInterval() {
    console.log('stopInterval => ', interval)

    clearInterval(interval)
    interval = -1
  }

</script>
<button onClick="stopInterval()">Stop Interval</button>
<button onClick="startInterval()">Start Interval</button>