DOCTYPE html> Document table { border-collapse: collapse; } td { padding: 5px 10px; text-align: center; } input { border: none; text-align: right; } input:focus { outline: none; } AC / 7 8 9 * 4 5 6 - 1 2 3 + 0 . = function add(char) { var display = document.getElementById('display'); display.value = display.value + char; } function calculate() { var display = document.getElementById('display');..
