js 树型菜单

最新推荐文章于 2024-12-19 19:40:50 发布

原创最新推荐文章于 2024-12-19 19:40:50 发布 · 103 阅读

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本文介绍了一种使用HTML和JavaScript实现的菜单展开与折叠效果。通过定义特定的函数和事件处理程序，可以使得页面上的菜单项能够响应用户的交互操作，如鼠标悬停或点击等，从而展示或隐藏子菜单。

转载：http://hi.baidu.com/javajavajava/blog
[img]http://hiphotos.baidu.com/javajavajava/pic/item/c0a28212ad186fd4c2fd78d5.jpg[/img]


<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">

<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <base target="mainframe">
        <Script language="javaScript">
function getTablesByStart(name){
    var inputs = document.getElementsByTagName("table");
    var files = new Array();
    var y = 0;
    for (var i=0; i<inputs.length; i++) {        
    if (inputs[i].id !=null && inputs[i].id.length>name.length && inputs[i].id.substring(0, name.length)==name){
        files[y] = inputs[i];
        y++;
    }
    }
    return files;
}

function HideAll(){
    var tables = getTablesByStart("menu_");
    for (var i=0; i<tables.length; i++) {
        tables[i].style.display = "none";
        var id = tables[i].id.substring("menu_".length);
        var imgId = document.getElementById("Img"+ id);
        var imgId2 = document.getElementById("Img"+ id + "_0");
        if(imgId) imgId.src="images/midclosedfolder.gif";
        if(imgId2) imgId2.src="images/clsfld.gif";
    }
}

function turnit(id) {
    var menu = document.getElementById("menu_"+ id);
    var imgId = document.getElementById("Img"+ id);
    var imgId2 = document.getElementById("Img"+ id + "_0");
    if (menu.style.display=="none"){
        HideAll();
        menu.style.display = "";
        if(imgId) imgId.src="images/midopenedfolder.gif";
        if(imgId2) imgId2.src="images/openfld.gif";
    }else{
        menu.style.display = "none";
        if(imgId) imgId.src="images/midclosedfolder.gif";
        if(imgId2) imgId2.src="images/clsfld.gif";
    }
}
</Script>
        <style type="text/css">
<!--
td {
    font-size: 13px;
    color: #000000;
    font-weight: none
}

a:active {
    color: #FF6600;
    text-decoration: none
}

a:hover {
    color: #FF6600;
    text-decoration: none
}

a:link {
    color: #FF6600;
    text-decoration: none
}

a:visited {
    color: #FF6600;
    text-decoration: none
}
-->
</style>
    </head>
    <body leftmargin="0" topmargin="0" bgcolor="#F1F1F1">
        <br>
        <!-------------------------产品管理START------------------------------->
        <table border=0 width="160" align="" cellspacing="0"
            cellpadding="0">
            <tr>
                <td colspan="3" language="JavaScript" onMouseUp="turnit('Product')"
                    style="CURSOR: hand">
                    <img id="ImgProduct" src="images/midclosedfolder.gif"
                        align="absMiddle" border="0" width="16">
                    <img name="ImgProduct_0" src="images/clsfld.gif" align="absMiddle"
                        border="0">
                    <font face=宋体><b>产品管理</b>
                    </font>
                </td>
            </tr>
        </table>
        <table id="menu_Product" border=0 width="160" align=""
            cellspacing="0" cellpadding="0" style="display: none">
            <tr>
                <td width="80">
                    <img src="images/vertline.gif" border=0>
                    <img src="images/lastnodeline.gif" align="absMiddle" border=0
                        width="16" height="22">
                    <img src="images/doctemp.gif" align="absMiddle" border="0"
                        width="16" height="16">
                </td>
                <td width="123">
                    <a href="">产品类别管理</a>
                </td>
            </tr>
        </table>
        <!-------------------------产品管理END------------------------------->
        <table border="0" width="160" align="" cellspacing="0"
            cellpadding="0">
            <tr>
                <td width="20">
                    <img src="images/lastnodeline.gif" border="0">
                </td>
                <td>
                    <a href="" target="_parent">退出系统</a>
                </td>
            </tr>
        </table>
    </body>
</html>

[img]http://hiphotos.baidu.com/javajavajava/pic/item/c515e2334e657d59ac4b5fd9.jpg[/img]
[img]http://hiphotos.baidu.com/javajavajava/pic/item/a9c1b0d41ded2b1ba08bb7db.jpg[/img]