JS+CSS点击收缩展开的竖直菜单

2024-09-05 12:20:24

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JavaScript+CSS联合打造可以展开，可以折叠收起的竖向菜单栏，没有经过美化处理，主要是想展示功能的实现，自我感觉不错，相信美化一下还是很不错的。

<html><head><title>点击收缩展开的竖直菜单</title><script language="JavaScript">NS4 = (document.layers) ? 1 : 0;IE4 = (document.all) ? 1 : 0;ver4 = (NS4 || IE4) ? 1 : 0;if (ver4) {    with (document) {        write("<STYLE TYPE='text/css'>");        if (NS4) {            write(".parent {position:absolute; visibility:visible}");            write(".child {position:absolute; visibility:visible}");            write(".regular {position:absolute; visibility:visible}")        }        else {            write(".child {display:none}")        }        write("</STYLE>");    }}function arrange() {    nextY = document.layers[firstInd].pageY +document.layers[firstInd].document.height;    for (i=firstInd+1; i<document.layers.length; i++) {        whichele = document.layers[i];        if (whichele.visibility != "hide") {            whichele.pageY = nextY;            nextY += whichele.document.height;        }    }}function initIt(){    if (!ver4) return;    if (NS4) {        for (i=0; i<document.layers.length; i++) {            whichele = document.layers[i];            if (whichele.id.indexOf("Child") != -1) whichele.visibility = "hide";       }        arrange();    }    else {        divColl = document.all.tags("DIV");        for (i=0; i<divColl.length; i++) {            whichele = divColl(i);            if (whichele.className == "child") whichele.style.display = "none";        }    }}function expandIt(ele) {    if (!ver4) return;    if (IE4) {        whichele = eval(ele + "Child");        if (whichele.style.display == "none") {            whichele.style.display = "block";        }        else {            whichele.style.display = "none";        }    }    else {        whichele = eval("document." + ele + "Child");        if (whichele.visibility == "hide") {            whichele.visibility = "show";        }        else {            whichele.visibility = "hide";        }        arrange();    }}onload = initIt;</script></head><body>      <div id="menuParent" class="parent">第一菜单</div>      <div id="menuChild" class="child">CSS菜单<br>        　　　　　网页特效<br>        　　　　　电子书籍</div>      <div id="Menu2Parent" class="parent">第二菜单</div>      <div id="Menu2Child" class="child">源码下载<br>        　　　　　站长工具<br>        　　　　　教程天地</div>      <div id="Menu3Parent" class="parent">第三菜单</div>      <div id="Menu3Child" class="child">自定义一<br>        　　　　　自定义二<br>        　　　　　自定义三</div></body></html>

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