“Onclick Reset” Ответ

Onclick Reset

<h2 id="count-me">4</h2>
<button onclick="save()">Reset</button>

function save() {
  	// If what you want to reset is an integer 
	document.getElementById("count-me").textContent = 0;
  
  	//  If what you want to reset is a textfield
  	document.getElementById("textfield1").value = "";
    let count = 0; // If you create a count variable in Javascript
}