HTML

  
     <button id="confetti">¡Libera el confetti! </button>
     <canvas id="custom_canvas"> </canvas>
     <script src="https://cdn.jsdelivr.net/npm/js-confetti@latest/dist/js-confetti.browser.js"></script>
     <script src="./script.js"> </script>
  

JS

  
    const button = document.getElementById('confetti')
    const canvas = document.getElementById('custom_canvas')
    
    const jsConfetti = new JSConfetti({ canvas })
    
    setTimeout(() => {
      jsConfetti.addConfetti()
    }, 500)
    
    button.addEventListener('click', () => {
      jsConfetti.addConfetti()
    })