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| <!DOCTYPE html> | |
| <html> | |
| <body> | |
| <style> | |
| html, body, div { | |
| margin: 0; | |
| padding: 0; | |
| border: 0; | |
| font-size: 100%; | |
| font: inherit; | |
| vertical-align: baseline; | |
| box-sizing: border-box; | |
| } | |
| </style> | |
| <script> | |
| var active = null | |
| var should_render = true | |
| var css = function(e, props) { | |
| for (var k in props) { | |
| if (typeof(props[k]) == 'number') { | |
| e.style[k] = props[k].toString() + 'px' | |
| } else { | |
| e.style[k] = props[k] | |
| } | |
| } | |
| } | |
| var doButton = function(id, w, h, text) { | |
| var e = document.createElement('div') | |
| e.innerText = text | |
| e.id = id | |
| css(e, { | |
| 'font-family': 'Ideal Sans A, Ideal Sans B, Helvetica Neue, Helvetica, Segoe UI, sans-serif', | |
| 'color': 'white', | |
| 'margin': 10, | |
| 'width': w, | |
| 'height': h, | |
| 'font-size': 14, | |
| 'padding': 10, | |
| 'line-height': h, | |
| 'text-align': 'center', | |
| 'cursor': 'pointer', | |
| '-webkit-user-select': 'none', | |
| 'border-radius': 6, | |
| 'background-color': '#d95b5b', | |
| 'transition': 'background-color 2s', | |
| }) | |
| root.appendChild(e) | |
| if (active == id) { | |
| return true | |
| } else { | |
| return false | |
| } | |
| } | |
| var root = document.createElement('div') | |
| document.body.appendChild(root) | |
| document.body.addEventListener('click', function(e) { | |
| if (e.target.id == '') { | |
| return | |
| } | |
| if (active != e.target.id) { | |
| active = e.target.id | |
| should_render = true | |
| } | |
| }) | |
| var counter = 0 | |
| var message = 'hello' | |
| var render = function() { | |
| root.innerHTML = '' | |
| var pressed = doButton("increment-button", 200, 50, "Increment Counter") | |
| if (pressed) { | |
| counter += 1 | |
| } | |
| var pressed = doButton("decrement-button", 200, 50, "Decrement Counter") | |
| if (pressed) { | |
| counter -= 1 | |
| } | |
| var e = document.createElement('div') | |
| css(e, { | |
| 'font-family': 'Ideal Sans A, Ideal Sans B, Helvetica Neue, Helvetica, Segoe UI, sans-serif', | |
| 'width': 150, | |
| 'height': 50, | |
| 'margin': 10, | |
| 'padding': 10, | |
| 'font-size': 14, | |
| 'text-align': 'center', | |
| 'color': 'white', | |
| 'background-color': 'rgb(42,72,107)', | |
| 'padding': '20px', | |
| 'border-radius': 6, | |
| }) | |
| e.innerText = 'counter: ' + counter.toString() | |
| root.appendChild(e) | |
| active = null | |
| } | |
| var animationFrame = function() { | |
| if (should_render) { | |
| render() | |
| should_render = false | |
| } | |
| window.requestAnimationFrame(animationFrame) | |
| } | |
| window.requestAnimationFrame(animationFrame) | |
| </script> | |
| </body> | |
| </html> |
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