js實(shí)現(xiàn)緩動(dòng)動(dòng)畫(huà)
本文實(shí)例為大家分享了js實(shí)現(xiàn)緩動(dòng)動(dòng)畫(huà)的具體代碼，供大家參考，具體內(nèi)容如下
利用定時(shí)器來(lái)控制元素的offsetLeft的值，offsetLeft = 開(kāi)始位置 + （最終位置 - 開(kāi)始位置）* 緩動(dòng)系數(shù)
<!DOCTYPE html><html lang='en'><head> <meta charset='UTF-8'> <title>Title</title> <style> * { margin: 0; padding: 0; border: none; list-style: none; } body { background-color: pink; } #nav { width: 900px; height: 63px; background: url('images/doubleOne.png') no-repeat right center #fff; margin: 0 auto; margin-top: 50px; border-radius: 5px; position: relative; } #nav ul { line-height: 70px; } #nav ul li { float: left; height: 63px; width: 88px; text-align: center; cursor: pointer; position: relative; } #t_mail { width: 88px; height: 63px; background: url('images/tMall.png') no-repeat; position: absolute; } </style></head><body> <nav id='nav'> <span id='t_mail'></span> <ul> <li>雙11狂歡</li> <li>服裝會(huì)場(chǎng)</li> <li>數(shù)碼家電</li> <li>母嬰童裝</li> <li>手機(jī)會(huì)場(chǎng)</li> <li>美妝會(huì)場(chǎng)</li> <li>家居建材</li> <li>進(jìn)口會(huì)場(chǎng)</li> <li>飛豬旅行</li> </ul> </nav> <script> window.onload = function () { var nav = $(’nav’); var t_mall = nav.children[0]; var ul = nav.children[1]; var allLis = ul.children; var beginX = 0; for (var i = 0; i < allLis.length; i++) { var li = allLis[i]; li.onmouseover = function () { end = this.offsetLeft; } li.onmousedown = function () { beginX = this.offsetLeft; } li.onmouseout = function () { end = beginX; } } var begin = 0, end = 0; setInterval(function () { begin = begin + (end - begin) / 10; t_mall.style.left = begin + ’px’; }, 10) function $(id) { return typeof id ? document.getElementById(id) : null; } } </script></body></html>
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