本文實例講述了JS實現橫向拉伸動感伸縮菜單效果代碼。分享給大家供大家參考。具體如下：
這是一款JS實現的縱向拉伸變橫向拉伸，動感伸縮菜單，緊身排列的CSS菜單，可用在博客等重要的位置部分作菜單，學習JavaScript前端設計的也可以作為參考范例。
運行效果截圖如下：
在線演示地址如下：
http://demo.VeVB.COm/js/2015/js-row-show-menu-style-codes/
具體代碼如下：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=gb2312" /><title>有彈性的菜單</title><style>*{ margin:0px; padding:0px;} body { background:#fff;} .naver{list-style-type:none; width:700px; overflow:hidden; margin:100px auto 0;} .naver li{ width:100px;height:50px; overflow:hidden; font-size:16px; text-align:center; cursor:pointer; } .naver li a,.naver li a:hover{display: block;width:100px; height:50px;line-height: 50px; color:#FFF; text-decoration: none; } .co1{ background:#649e37}.co2{ background:#028fbc}</style><script type="text/javascript"> window.onload = function() { var oUl = document.getElementById("nav"); var aLi = oUl.getElementsByTagName("li"); var i = 0; for (i = 0; i < aLi.length; i++) { aLi[i].timer = null; aLi[i].speed = 0; aLi[i].onmouseover = function() { startMove(this, 250); }; aLi[i].onmouseout = function() { startMove2(this, 100); }; } }; function startMove(obj, iTarget) { if (obj.timer) { clearInterval(obj.timer); } obj.timer = setInterval(function() { doMove(obj, iTarget); }, 30) }; function doMove(obj, iTarget) { obj.speed += 3; if (Math.abs(iTarget - obj.offsetWidth) < 1 && Math.abs(obj.speed) < 1) { clearInterval(obj.timer); obj.timer = null; } else { if (obj.offsetWidth + obj.speed >= iTarget) { obj.speed *= -0.7; obj.style.width = iTarget + "px"; } else { obj.style.width = obj.offsetWidth + obj.speed + "px"; } } }; function startMove2(obj, iTarget) { if (obj.timer) { clearInterval(obj.timer); } obj.timer = setInterval(function() { doMove2(obj, iTarget); }, 30) }; function doMove2(obj, iTarget) { obj.speed -= 3; if (Math.abs(iTarget - obj.offsetWidth) < 1 && Math.abs(obj.speed) < 1) { clearInterval(obj.timer); obj.timer = null; } else { if (obj.offsetWidth + obj.speed <= iTarget) { obj.speed *= -0.7; obj.style.width = iTarget + "px"; } else { obj.style.width = obj.offsetWidth + obj.speed + "px"; } } };</script></head><body> <ul id="nav" class="naver"> <li class="co1"> <a href="#">首頁</a> </li> <li class="co2"> <a href="#">愛好</a> </li> <li class="co1"> <a href="#">作品</a> </li> <li class="co2"> <a href="#">聯系</a> </li> <li class="co1"> <a href="#">博客</a> </li> </ul></body></html>希望本文所述對大家的javascript程序設計有所幫助。
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