Simple countdown using Greensock. You could add an "onComplete" to the Tweenlite to trigger an event when the countdown ends.
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September 30, 2015 03:14
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Movie Countdown with Greensock
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <style> | |
| body { | |
| background: #000; | |
| } | |
| .dial-wrapper { | |
| font-size: 72px; | |
| margin: auto; | |
| position: relative; | |
| width: 2em; | |
| height: 2em; | |
| border-radius: 2em; | |
| background: rgba(255,255,255,0.1); | |
| } | |
| .dial-counter { | |
| display: block; | |
| width: 2em; | |
| line-height: 2em; | |
| text-align: center; | |
| color: rgba(255,255,255,0.5); | |
| } | |
| .dial-wrapper:after { | |
| content: ''; | |
| position: absolute; | |
| display: block; | |
| top: -4px; | |
| right: -4px; | |
| bottom: -4px; | |
| left: -4px; | |
| border-radius: 2em; | |
| border: 2px solid rgba(255,255,255,0.2); | |
| } | |
| .dial-container { | |
| position: absolute; | |
| top: 0; | |
| bottom: 0; | |
| overflow: hidden; | |
| width: 50%; | |
| } | |
| .dial-wedge { | |
| background: rgba(255,255,255,0.2); | |
| height: 100%; | |
| width: 100%; | |
| } | |
| .dial-container1 { | |
| left: 50%; | |
| } | |
| .dial-container1 .dial-wedge { | |
| border-radius: 0 1em 1em 0; | |
| } | |
| .dial-container2 { | |
| left: 0; | |
| } | |
| .dial-container2 .dial-wedge { | |
| border-radius: 1em 0 0 1em; | |
| } | |
| .dial-hand { | |
| position: absolute; | |
| top: 0; | |
| left: 0; | |
| width: 50%; | |
| height: 50%; | |
| border-right: 3px solid rgba(255,255,255,0.5); | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div class="dial-wrapper"> | |
| <div class="dial-counter">5</div> | |
| <div class="dial-container dial-container1"> | |
| <div class="dial-wedge"></div> | |
| </div> | |
| <div class="dial-container dial-container2"> | |
| <div class="dial-wedge"></div> | |
| </div> | |
| <div class="dial-hand"></div> | |
| </div> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/1.18.0/plugins/CSSPlugin.min.js"></script> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/1.18.0/TweenLite.min.js"></script> | |
| <script> | |
| (function (control) { | |
| var counter = document.querySelector('.dial-counter'), | |
| hand = document.querySelector('.dial-hand'), | |
| container1 = document.querySelector('.dial-container1 .dial-wedge'), | |
| container2 = document.querySelector('.dial-container2 .dial-wedge'), | |
| count = ~~counter.textContent; | |
| TweenLite.set(hand, { transformOrigin: '100% 100%' }); | |
| TweenLite.set(container1, { transformOrigin: '0 50%' }); | |
| TweenLite.set(container2, { transformOrigin: '100% 50%' }); | |
| TweenLite.to(control, count, { | |
| t: count, | |
| onUpdate: function () { | |
| var t = control.t; | |
| TweenLite.set(hand, { rotation: t*360 }); | |
| TweenLite.set(container1, { rotation: (t % 1 > 0.5) ? 180 : t*360 }); | |
| TweenLite.set(container2, { rotation: (t % 1 < 0.5) ? 0 : t*360 + 180 }); | |
| counter.textContent = Math.ceil(count - t); | |
| }, | |
| ease:Linear.easeNone | |
| }); | |
| })({t: 0}); | |
| </script> | |
| </body> | |
| </html> |
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