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August 29, 2015 14:07
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要素をフェードインさせる関数。
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| function fadeIn (elm) { | |
| var last = +new Date(); | |
| elm.style.opacity = 0; | |
| tick(); | |
| function tick () { | |
| elm.style.opacity = +el.style.opacity + (new Date() - last) / 400; | |
| last = +new Date(); | |
| if (+elm.style.opacity < 1) { | |
| (window.requestAnimationFrame && requestAnimationFrame(tick)) || setTimeout(tick, 16); | |
| } | |
| } | |
| } |
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