本文实例讲述了JS实现带有抽屉效果的产品类网站多级导航菜单代码。分享给大家供大家参考。具体如下：
这是一款像抽屉一样的菜单，多用在产品网站，比如IT产品网站的分类导航上，菜单结构清淅，样式新颖，设计美观，主要是运用JavaScript技术实现，用CSS配合实现菜单背景的构建，总体来说，是学习Js多级分类菜单的好范例。
运行效果截图如下：
在线演示地址如下：
http://demo.jb51.net/js/2015/js-ct-style-product-web-nav-menu-codes/
具体代码如下：
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document.getElementById("p5").style.display="none"; document.getElementById("p6").style.display="none"; break; case 5: document.getElementById("t2").className="bg02"; document.getElementById("t3").className="bg02"; document.getElementById("t4").className="bg02"; document.getElementById("t5").className="bg02"; document.getElementById("t6").className="this"; document.getElementById("t7").className="this2"; document.getElementById("t8").className="bg02"; document.getElementById("p1").style.display="none"; document.getElementById("p2").style.display="none"; document.getElementById("p3").style.display="none"; document.getElementById("p4").style.display="none"; document.getElementById("p5").style.display="block"; document.getElementById("p6").style.display="none"; break; case 6: document.getElementById("t2").className="bg02"; document.getElementById("t3").className="bg02"; document.getElementById("t4").className="bg02"; document.getElementById("t5").className="bg02"; document.getElementById("t6").className="bg02"; document.getElementById("t7").className="this"; document.getElementById("t8").className="this2"; document.getElementById("p1").style.display="none"; document.getElementById("p2").style.display="none"; document.getElementById("p3").style.display="none"; document.getElementById("p4").style.display="none"; document.getElementById("p5").style.display="none"; document.getElementById("p6").style.display="block"; } }function setturns2(i){ selectturns2(i); } function selectturns2(i){ switch(i){ case 1: document.getElementById("b1").className="on"; document.getElementById("b2").className=""; document.getElementById("b3").className=""; document.getElementById("b4").className=""; document.getElementById("b5").className=""; document.getElementById("s1").style.display="block"; document.getElementById("s2").style.display="none"; document.getElementById("s3").style.display="none"; document.getElementById("s4").style.display="none"; document.getElementById("s5").style.display="none"; break; case 2: document.getElementById("b1").className=""; document.getElementById("b2").className="on"; document.getElementById("b3").className=""; document.getElementById("b4").className=""; document.getElementById("b5").className=""; document.getElementById("s1").style.display="none"; document.getElementById("s2").style.display="block"; document.getElementById("s3").style.display="none"; document.getElementById("s4").style.display="none"; document.getElementById("s5").style.display="none"; break; case 3: document.getElementById("b1").className=""; document.getElementById("b2").className=""; document.getElementById("b3").className="on"; document.getElementById("b4").className=""; document.getElementById("b5").className=""; document.getElementById("s1").style.display="none"; document.getElementById("s2").style.display="none"; document.getElementById("s3").style.display="block"; document.getElementById("s4").style.display="none"; 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document.getElementById("s5").style.display="block"; } }function setturns3(i){ selectturns3(i); } function selectturns3(i){ switch(i){ case 1: document.getElementById("t2").className="this"; document.getElementById("t3").className="this2"; document.getElementById("p1").style.display="block"; document.getElementById("s1").style.display="block"; document.getElementById("s2").style.display="none"; document.getElementById("s3").style.display="none"; document.getElementById("s4").style.display="none"; document.getElementById("s5").style.display="none"; break; case 2: document.getElementById("t2").className="this"; document.getElementById("t3").className="this2"; document.getElementById("p1").style.display="block"; document.getElementById("s1").style.display="none"; document.getElementById("s2").style.display="block"; document.getElementById("s3").style.display="none"; document.getElementById("s4").style.display="none"; document.getElementById("s5").style.display="none"; break; case 3: document.getElementById("t2").className="this"; document.getElementById("t3").className="this2"; document.getElementById("p1").style.display="block"; document.getElementById("s1").style.display="none"; document.getElementById("s2").style.display="none"; document.getElementById("s3").style.display="block"; document.getElementById("s4").style.display="none"; document.getElementById("s5").style.display="none"; break; case 4: document.getElementById("t2").className="this"; document.getElementById("t3").className="this2"; document.getElementById("p1").style.display="block"; document.getElementById("s1").style.display="none"; document.getElementById("s2").style.display="none"; document.getElementById("s3").style.display="none"; document.getElementById("s4").style.display="block"; document.getElementById("s5").style.display="none"; break; case 5: document.getElementById("t2").className="this"; document.getElementById("t3").className="this2"; document.getElementById("p1").style.display="block"; document.getElementById("s1").style.display="none"; document.getElementById("s2").style.display="none"; document.getElementById("s3").style.display="none"; document.getElementById("s4").style.display="none"; document.getElementById("s5").style.display="block"; } } function setturns4(i){ selectturns4(i); } function selectturns4(i){ switch(i){ case 1: document.getElementById("z1").className="on"; document.getElementById("z2").className=""; document.getElementById("z3").className=""; document.getElementById("z4").className=""; document.getElementById("z5").className=""; document.getElementById("z6").className=""; document.getElementById("z7").className=""; document.getElementById("w1").style.display="block"; document.getElementById("w2").style.display="none"; document.getElementById("w3").style.display="none"; document.getElementById("w4").style.display="none"; document.getElementById("w5").style.display="none"; document.getElementById("w6").style.display="none"; document.getElementById("w7").style.display="none"; break; case 2: document.getElementById("z1").className=""; document.getElementById("z2").className="on"; document.getElementById("z3").className=""; document.getElementById("z4").className=""; document.getElementById("z5").className=""; document.getElementById("z6").className=""; document.getElementById("z7").className=""; document.getElementById("w1").style.display="none"; document.getElementById("w2").style.display="block"; document.getElementById("w3").style.display="none"; document.getElementById("w4").style.display="none"; document.getElementById("w5").style.display="none"; document.getElementById("w6").style.display="none"; document.getElementById("w7").style.display="none"; break; case 3: document.getElementById("z1").className=""; document.getElementById("z2").className=""; document.getElementById("z3").className="on"; document.getElementById("z4").className=""; document.getElementById("z5").className=""; document.getElementById("z6").className=""; document.getElementById("z7").className=""; document.getElementById("w1").style.display="none"; document.getElementById("w2").style.display="none"; document.getElementById("w3").style.display="block"; document.getElementById("w4").style.display="none"; document.getElementById("w5").style.display="none"; document.getElementById("w6").style.display="none"; document.getElementById("w7").style.display="none"; break; case 4: document.getElementById("z1").className=""; document.getElementById("z2").className=""; document.getElementById("z3").className=""; document.getElementById("z4").className="on"; document.getElementById("z5").className=""; document.getElementById("z6").className=""; document.getElementById("z7").className=""; document.getElementById("w1").style.display="none"; document.getElementById("w2").style.display="none"; document.getElementById("w3").style.display="none"; document.getElementById("w4").style.display="block"; document.getElementById("w5").style.display="none"; document.getElementById("w6").style.display="none"; document.getElementById("w7").style.display="none"; break; case 5: document.getElementById("z1").className=""; document.getElementById("z2").className=""; document.getElementById("z3").className=""; document.getElementById("z4").className=""; document.getElementById("z5").className="on"; document.getElementById("z6").className=""; document.getElementById("z7").className=""; document.getElementById("w1").style.display="none"; document.getElementById("w2").style.display="none"; document.getElementById("w3").style.display="none"; document.getElementById("w4").style.display="none"; document.getElementById("w5").style.display="block"; document.getElementById("w6").style.display="none"; document.getElementById("w7").style.display="none"; break; case 6: document.getElementById("z1").className=""; document.getElementById("z2").className=""; document.getElementById("z3").className=""; document.getElementById("z4").className=""; document.getElementById("z5").className=""; document.getElementById("z6").className="on"; document.getElementById("z7").className=""; document.getElementById("w1").style.display="none"; document.getElementById("w2").style.display="none"; document.getElementById("w3").style.display="none"; document.getElementById("w4").style.display="none"; document.getElementById("w5").style.display="none"; document.getElementById("w6").style.display="block"; document.getElementById("w7").style.display="none"; break; case 7: document.getElementById("z1").className=""; document.getElementById("z2").className=""; document.getElementById("z3").className=""; document.getElementById("z4").className=""; document.getElementById("z5").className=""; document.getElementById("z6").className=""; document.getElementById("z7").className="on"; document.getElementById("w1").style.display="none"; document.getElementById("w2").style.display="none"; document.getElementById("w3").style.display="none"; document.getElementById("w4").style.display="none"; document.getElementById("w5").style.display="none"; document.getElementById("w6").style.display="none"; document.getElementById("w7").style.display="block"; } } function setturns5(i){ selectturns5(i); } function selectturns5(i){ switch(i){ case 1: document.getElementById("t5").className="this"; document.getElementById("t6").className="this2"; document.getElementById("p4").style.display="block"; document.getElementById("w1").style.display="block"; document.getElementById("w2").style.display="none"; document.getElementById("w3").style.display="none"; document.getElementById("w4").style.display="none"; document.getElementById("w5").style.display="none"; document.getElementById("w6").style.display="none"; document.getElementById("w7").style.display="none"; break; case 2: document.getElementById("t5").className="this"; document.getElementById("t6").className="this2"; document.getElementById("p4").style.display="block"; document.getElementById("w1").style.display="none"; document.getElementById("w2").style.display="block"; document.getElementById("w3").style.display="none"; document.getElementById("w4").style.display="none"; document.getElementById("w5").style.display="none"; document.getElementById("w6").style.display="none"; document.getElementById("w7").style.display="none"; break; case 3: document.getElementById("t5").className="this"; document.getElementById("t6").className="this2"; document.getElementById("p4").style.display="block"; document.getElementById("w1").style.display="none"; document.getElementById("w2").style.display="none"; document.getElementById("w3").style.display="block"; document.getElementById("w4").style.display="none"; document.getElementById("w5").style.display="none"; document.getElementById("w6").style.display="none"; document.getElementById("w7").style.display="none"; break; case 4: document.getElementById("t5").className="this"; document.getElementById("t6").className="this2"; document.getElementById("p4").style.display="block"; document.getElementById("w1").style.display="none"; document.getElementById("w2").style.display="none"; document.getElementById("w3").style.display="none"; document.getElementById("w4").style.display="block"; document.getElementById("w5").style.display="none"; document.getElementById("w6").style.display="none"; document.getElementById("w7").style.display="none"; break; case 5: document.getElementById("t5").className="this"; document.getElementById("t6").className="this2"; document.getElementById("p4").style.display="block"; document.getElementById("w1").style.display="none"; document.getElementById("w2").style.display="none"; document.getElementById("w3").style.display="none"; document.getElementById("w4").style.display="none"; document.getElementById("w5").style.display="block"; document.getElementById("w6").style.display="none"; document.getElementById("w7").style.display="none"; break; case 6: document.getElementById("t5").className="this"; document.getElementById("t6").className="this2"; document.getElementById("p4").style.display="block"; document.getElementById("w1").style.display="none"; document.getElementById("w2").style.display="none"; document.getElementById("w3").style.display="none"; document.getElementById("w4").style.display="none"; document.getElementById("w5").style.display="none"; document.getElementById("w6").style.display="block"; document.getElementById("w7").style.display="none"; //download by http://www.daimajiayuan.com break; case 7: document.getElementById("t5").className="this"; document.getElementById("t6").className="this2"; document.getElementById("p4").style.display="block"; document.getElementById("w1").style.display="none"; document.getElementById("w2").style.display="none"; 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top:324px;}#p5{top:164px;}#p6{ top:196px;}.prdct .s_son{left:450px;}</style></head><body><div class="link_box"><div class="prdct"><p class="bg01" id="t1"></p><p class="bg02" id="t2"></p><p class="bg02" id="t3" onmouseover="setturns(1)" onmouseout="setturnsout(1)"><a href="#">表面活性剂系列</a></p><p class="bg02" id="t4" onmouseover="setturns(2)" onmouseout="setturnsout(1)"><a href="#">螯合剂系列</a></p><p class="bg02" id="t5" onmouseover="setturns(3)" onmouseout="setturnsout(1)"><a href="#">增粘乳液系列</a></p><p class="bg02" id="t6" onmouseover="setturns(4)" onmouseout="setturnsout(1)"><a href="#">造纸化学品系列</a></p><p class="bg02" id="t7" onmouseover="setturns(5)" onmouseout="setturnsout(1)"><a href="#">印刷化学品系列</a></p><p class="bg02" id="t8" onmouseover="setturns(6)" onmouseout="setturnsout(1)"><a href="#">代理产品</a></p><p class="bg07" id="t9"></p><div class="p_son" id="p1" onmouseover="setturns(1)" onmouseout="setturnsout(1)"><ul><li id="b1" onmouseover="setturns2(1)" onmouseout="setturnsout(1)"><a href="#" class="jt">功能性表面活性剂</a></li><li id="b2" onmouseover="setturns2(2)" onmouseout="setturnsout(1)"><a href="#" class="jt">阳离子表面活性剂</a></li><li id="b3" onmouseover="setturns2(3)" onmouseout="setturnsout(1)"><a href="#" class="jt">非离子表面活性剂</a></li><li id="b4" onmouseover="setturns2(4)" onmouseout="setturnsout(1)"><a href="#" class="jt">阴离子表面活性剂</a></li><li id="b5" onmouseover="setturns2(5)" onmouseout="setturnsout(1)"><a href="#" class="jt">两性表面活性剂</a></li></ul></div><div class="p_son" id="p2" onmouseover="setturns(2)" onmouseout="setturnsout(1)"><ul><li><a href="#">DXP-1020胶粘剂专用消泡剂</a></li><li><a href="#">DXP-007消泡剂</a></li> <li><a href="#">DXP-007消泡剂</a></li> <li><a href="#">DXP-007消泡剂</a></li> </ul></div><div class="p_son" id="p3" onmouseover="setturns(3)" onmouseout="setturnsout(1)"><ul><li><a href="#">施胶剂 </a></li><li><a href="#">氧漂稳定剂系列</a></li> <li><a href="#">蒸煮助剂</a></li> <li><a href="#">脱墨剂</a></li> <li><a href="#">消泡剂</a></li> <li><a href="#">施胶剂 </a></li></ul></div><div class="p_son" id="p4" onmouseover="setturns(4)" onmouseout="setturnsout(1)"><ul><li id="z1" onmouseover="setturns4(1)" onmouseout="setturnsout(1)"><a href="#" class="jt">螯合剂 </a></li><li id="z2" onmouseover="setturns4(2)" onmouseout="setturnsout(1)"><a href="#" class="jt">乳化剂</a></li> <li id="z3" onmouseover="setturns4(3)" onmouseout="setturnsout(1)"><a href="#" class="jt">施胶剂</a></li> <li id="z4" onmouseover="setturns4(4)" onmouseout="setturnsout(1)"><a href="#" class="jt">脱墨剂</a></li> <li id="z5" onmouseover="setturns4(5)" onmouseout="setturnsout(1)"><a href="#" class="jt">显白剂</a></li> <li id="z6" onmouseover="setturns4(6)" onmouseout="setturnsout(1)"><a href="#" class="jt">消泡剂 </a></li><li id="z7" onmouseover="setturns4(7)" onmouseout="setturnsout(1)"><a href="#" class="jt">蒸煮助剂</a></li> </ul></div><div class="p_son" id="p5" onmouseover="setturns(5)" onmouseout="setturnsout(1)"><ul><li><a href="#">施胶剂 </a></li><li><a href="#">氧漂稳定剂系列</a></li> <li><a href="#">蒸煮助剂</a></li> <li><a href="#">脱墨剂</a></li> <li><a href="#">消泡剂</a></li> <li><a href="#">施胶剂 </a></li><li><a href="#">氧漂稳定剂系列</a></li> </ul></div><div class="p_son" id="p6" onmouseover="setturns(6)" onmouseout="setturnsout(1)"><ul><li><a href="#">罗迪亚造纸脱墨剂 </a></li><li><a href="#">DTPA二乙烯三胺五乙酸 </a></li> <li><a href="#">二乙烯三胺五乙酸五钠DTPA-Na5 </a></li> <li><a href="#">乙二胺四乙酸EDTA </a></li> <li><a href="#">乙二胺四乙酸四钠EDTA-Na4 </a></li> <li><a href="#">乙二胺四乙酸二钠盐 </a></li><li><a href="#">氧漂稳定剂系列</a></li> </ul></div><div class="p_son s_son" id="s1" onmouseover="setturns3(1)" onmouseout="setturnsout(1)"><ul><li><a href="#">施胶剂 </a></li><li><a href="#">氧漂稳定剂系列</a></li> <li><a href="#">蒸煮助剂</a></li> <li><a href="#">脱墨剂</a></li> <li><a href="#">消泡剂</a></li> <li><a href="#">施胶剂 </a></li><li><a href="#">氧漂稳定剂系列</a></li> </ul></div><div class="p_son s_son" id="s2" onmouseover="setturns3(2)" onmouseout="setturnsout(1)"><ul><li><a href="#">施胶剂 </a></li><li><a href="#">氧漂稳定剂系列</a></li> <li><a href="#">蒸煮助剂</a></li> <li><a href="#">脱墨剂</a></li> <li><a href="#">消泡剂</a></li> <li><a href="#">施胶剂 </a></li><li><a href="#">氧漂稳定剂系列</a></li> </ul></div><div class="p_son s_son" id="s3" onmouseover="setturns3(3)" onmouseout="setturnsout(1)"><ul><li><a href="#">施胶剂 </a></li><li><a href="#">氧漂稳定剂系列氧列氧漂稳定剂系列</a></li> <li><a href="#">蒸煮助剂</a></li> <li><a href="#">脱墨剂</a></li> <li><a href="#">消泡剂</a></li> <li><a href="#">施胶剂 </a></li><li><a href="#">氧漂稳定剂系列</a></li> </ul></div><div class="p_son s_son" id="s4" onmouseover="setturns3(4)" onmouseout="setturnsout(1)"><ul><li><a href="#">施胶剂 </a></li><li><a href="#">氧漂稳定剂系列</a></li> <li><a href="#">蒸煮助剂</a></li> <li><a href="#">脱墨剂</a></li> <li><a href="#">消泡剂</a></li> <li><a href="#">施胶剂 </a></li><li><a href="#">氧漂稳定剂系列</a></li> </ul></div><div class="p_son s_son" id="s5" onmouseover="setturns3(5)" onmouseout="setturnsout(1)"><ul><li><a href="#">施胶剂 </a></li><li><a href="#">氧漂稳定剂系列</a></li> <li><a href="#">蒸煮助剂</a></li> <li><a href="#">脱墨剂</a></li> <li><a href="#">消泡剂</a></li> <li><a href="#">施胶剂 </a></li><li><a href="#">氧漂稳定剂系列</a></li> </ul></div><div class="p_son s_son" id="w1" onmouseover="setturns5(1)" onmouseout="setturnsout(1)"><ul><li><a href="#">45345</a></li><li><a href="#">45345</a></li> <li><a href="#">453453</a></li> <li><a href="#">453</a></li></ul></div><div class="p_son s_son" id="w2" onmouseover="setturns5(2)" onmouseout="setturnsout(1)"><ul><li><a href="#">45345</a></li><li><a href="#">45345</a></li> <li><a href="#">453453</a></li> <li><a href="#">453</a></li></ul></div><div class="p_son s_son" id="w3" onmouseover="setturns5(3)" onmouseout="setturnsout(1)"><ul><li><a href="#">45345</a></li><li><a href="#">45345</a></li> <li><a href="#">453453</a></li> <li><a href="#">453</a></li></ul></div><div class="p_son s_son" id="w4" onmouseover="setturns5(4)" onmouseout="setturnsout(1)"><ul><li><a href="#">45345</a></li><li><a href="#">45345</a></li> <li><a href="#">453453</a></li> <li><a href="#">453</a></li></ul></div><div class="p_son s_son" id="w5" onmouseover="setturns5(5)" onmouseout="setturnsout(1)"><ul><li><a href="#">45345</a></li><li><a href="#">45345</a></li> <li><a href="#">453453</a></li> <li><a href="#">453</a></li></ul></div><div class="p_son s_son" id="w6" onmouseover="setturns5(6)" onmouseout="setturnsout(1)"><ul><li><a href="#">45345</a></li><li><a href="#">45345</a></li> <li><a href="#">453453</a></li> <li><a href="#">453</a></li></ul></div><div class="p_son s_son" id="w7" onmouseover="setturns5(7)" onmouseout="setturnsout(1)"><ul><li><a href="#">45345</a></li><li><a href="#">45345</a></li> <li><a href="#">453453</a></li> <li><a href="#">453</a></li></ul></div></div><div class="clr"></div></div></body></html>希望本文所述对大家的JavaScript程序设计有所帮助。
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