Andrei2
by justinwyllie
HTML
<div id='displayResult'>0</div>
<input id='numberBox' />
<button onClick='addNumber()'>Add number</button>
JavaScript
var result = 0;
function addNumber() {
var resultBox = document.getElementById('displayResult');
var newNumberBox = document.getElementById('numberBox');
result = result + newNumberBox.value*1;
console.log(result);
resultBox.innerHTML = result;
}