javascript onclick increment number - javascript onclick Additon Numbers

javascript onclick increment number without using form - javascript onclick Add Number 1 to previous number:
it is like a random increment number function

<script> var i = 0; function buttonClick() { document.getElementById('inc').value = ++i; } </script> <button onclick="buttonClick()">Click Me</button> <input type="text" id="inc" value="0"></input> Check Output here:

javascript onclick increment number with using form - javascript onclick Add Number 1 to previous number:
it is like a random increment number function

<script> function incrementValue() { var value = parseInt(document.getElementById('number').value, 10); value = isNaN(value) ? 0 : value; value++; document.getElementById('number').value = value; } </script> <form> <input type="text" id="number" value="0"/> <input type="button" onclick="incrementValue()" value="Increment Value" /> </form> Check Output here: