text: const btn = document.getElementById('btn')
  let count = 0
  
  function render() {  
    btn.innerText = `Count: ${count}`
  }
  
  btn.addEventListener('click', () => {  
    // Count from 1 to 10.  
    if (count < 10) {    
      count += 1    
      render()  
    }
  })