const buttons = document.querySelectorAll('.addButton');
let initialVal = buttons.value = 0
function add() {
let inc = parseInt(initialVal++)
console.log(inc);
}
<button class="addButton" value="0" onclick="add()">Add</button>
<button class="addButton" value="0" onclick="add()">Add</button>
<buttonclass="addButton" value="0" onclick="add()">Add</button>
Expected Output
button1 clicked
output: 0,1,2,3,4
button2 clicked
output:0,1,2,3,4
my current output :
button1 :0,1,2
button2 :3,4,5...