Created
February 15, 2016 17:10
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Counter Test
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <title>Counter Test</title> | |
| <style> | |
| * { | |
| margin: 0; | |
| padding: 0; | |
| box-sizing: border-box; | |
| } | |
| body { | |
| font: 900 16px 'Source Sans Pro'; | |
| line-height: 1.5em; | |
| background-color: indigo; | |
| } | |
| .counter { | |
| font-size: 4em; | |
| width: 120px; | |
| height: 120px; | |
| line-height: 115px; | |
| text-align: center; | |
| margin: 0 auto; | |
| margin-top: 4em; | |
| color: white; | |
| border-radius: 100%; | |
| border: solid 2px white; | |
| opacity: 1; | |
| } | |
| .counter div { | |
| transition: all .3s ease; | |
| } | |
| .counter.counter--btm div { | |
| transform: translateY(20px); | |
| } | |
| .counter.counter--top div { | |
| transform: translateY(-20px); | |
| } | |
| .counter.counter--fade div { | |
| opacity: 0; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div class="counter"> | |
| <div>1</div> | |
| </div> | |
| <script> | |
| var startCounter = (function(){ | |
| var el = document.querySelector('.counter'), | |
| numberEl = el.getElementsByTagName('div')[0], | |
| i, | |
| currInterval; | |
| var callback = function(end){ | |
| el.classList.add('counter--top'); | |
| el.classList.add('counter--fade'); | |
| setTimeout(function(){ | |
| el.classList.remove('counter--top'); | |
| el.classList.add('counter--btm'); | |
| setTimeout(function(){ | |
| numberEl.innerHTML = i; | |
| el.classList.remove('counter--btm'); | |
| el.classList.remove('counter--fade'); | |
| console.log(i, end); | |
| if(i <= end){ | |
| clearInterval(currInterval); | |
| } else { | |
| i--; | |
| } | |
| }, 300); | |
| }, 300); | |
| }; | |
| return function(start, end){ | |
| numberEl.innerHTML = start; | |
| i = start-1; | |
| currInterval = setInterval(function(){ | |
| callback(end); | |
| }, 1600); | |
| }; | |
| }()); | |
| </script> | |
| </body> | |
| </html> |
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