我有以下数组：
$firstlevel=array(“numbers”,”vowels”,”animals”,”birds”);
$numbers=array(“one”,”two”,”three”);
$vowels= array (“a”,”e”,”i”,,”o”,”u”);
$animals=array(“lion”,”tiger”,”dog”,”wolf”,”horse”,”Zebra”);
$birds=array(“parrot”,”sparrow”,”crow”);
我需要如下树形菜单：（仅使用 PHP）
+ numbers
+ vowels
+ animals
+ birds
Reset button
点击后展开如下：
+ Fruits
- Vegetables
+ Drumstick
+ Lady’s finger
+ Animals
+ Birds
一旦我们点击另一个第一级项目，其相应的子节点将被展开，相同的格式应该被保留。
这适用于纯 css、js 和 html 代码。对于 php，请参阅下一节。
$(document).ready(function(){
$('.child').hide();
});
$( "a" ).click(function() {
Show(this);
});
function Show(obj)
{
var ObjId = obj.id;
var Obj = ObjId.split('-');
var id = Obj[0];
var symb = $('#'+id+'-symbol').html();
if(symb.trim() == "+")
{
$('#'+id).show(1000);
$('#'+id+'-symbol').html("- ");
}
else
{
$('#'+id).hide(1000);
$('#'+id+'-symbol').html("+ ");
}
}ul {
list-style: none;
margin-left:10px;
}
ul>li{
margin-left:15px;
padding-top:10px;
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<ul>
<li>
<a id='fruit-a' style='text-decoration:none; color:black;' href='#'>
<span id='fruit-symbol'>+ </span>
Fruit
</a>
<ul class='child' id='fruit'>
<li>* numbers</li>
<li>* vowels</li>
<li>* animals</li>
<li>* birds</li>
</ul>
</li>
</ul>你可以用 php 来做到这一点。
<html>
<head>
<style>
ul {
list-style: none;
}
</style>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
$('.child').hide();
});
function Show(id)
{
var symb = $('#'+id+'-symbol').html();
if(symb.trim() == "+")
{
$('#'+id).show(1000);
$('#'+id+'-symbol').html("- ");
}
else
{
$('#'+id).hide(1000);
$('#'+id+'-symbol').html("+ ");
}
}
</script>
</head>
<body>
<?php
$firstlevel=array("numbers","vowels","animals","birds");
$numbers=array("one","two","three");
$vowels= array ("a","e","i","o","u");
$animals=array("lion","tiger","dog","wolf","horse","Zebra");
$birds=array("parrot","sparrow","crow");
$AllArray = ["firstlevel", "numbers", "vowels", "animals", "birds"];
echo "<ul>";
foreach($AllArray as $a)
{
echo "<li><a onclick=\"Show('".$a."')\" style='text-decoration:none; color:black;' href='#'><span id='".$a."-symbol'>+ </span>".$a."</a><ul class='child' id='".$a."'>";
foreach($$a as $id=>$val)
{
echo "<li>* ".$val."</li>";
}
echo "</ul></li>";
}
echo "</ul>";
?>
</body>
</html>
您可以通过此链接查看结果https://www.tehplayground.com/5SHAWKeEcsm5O5Ww
首先，您需要创建一个像这样的表：
CREATE TABLE IF NOT EXISTS `menus` (
`cid` int(10) NOT NULL,
`name` varchar(20) NOT NULL,
`parent_cat` int(10) NOT NULL,
PRIMARY KEY (`cid`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
INSERT INTO `menus` (`cid`, `name`, `parent_cat`) VALUES
(1, 'numbers', 0),
(2, 'vowels', 0),
(3, 'one', 7),
(4, 'two', 7),
(5, 'a', 2),
(6, 'e', 2),
(7, 'ones', 1),
(8, 'tens', 1),
(9, 'ten', 8),
(10, 'twenty', 8);
下载这个插件 ，这是我创建展开和折叠菜单的 php 代码：
<?php
$viewsql = "SELECT * FROM menus";
$viewsqlres=mysql_query($viewsql);
while ( $viewsqlrow = mysql_fetch_array($viewsqlres)) {
$viewarray[$viewsqlrow['cid']] = array('cid'=>$viewsqlrow['cid'],'name' => $viewsqlrow['name'],'parent_cat' => $viewsqlrow['parent_cat']);
}
function view_generate_menu($parent_cat_view) //recursive function that prints category as a nested html unorderd list
{
$has_childs_view = false;
////this prevents printing 'ul' if we don't have subcategory for this category
global $viewarray;
////use global array variable instead of a local variable to lower stack memory requierment
foreach($viewarray as $key => $value_view) {
if ($value_view['parent_cat'] == $parent_cat_view) {
//if this is the first child print '<ul>'
if ($has_childs_view === false) {
//don't print '<ul>' multiple times
$has_childs_view = true;
?>
<ul id="tree">
<?php } ?>
<li><?php echo $value_view['name']; ?>
<?php
view_generate_menu($key);
////call function again to generate nested list for subcategory belonging to this category
echo '</li>';
}
}
if ($has_childs_view === true) echo '</ul>';
}
view_generate_menu(0);
?>
一些造型：
<style>
#tree li {
list-style: none outside none;}
</style>
use jquery with php u will get i did same thing try this......
include this first
<div class="menu_list" id="secondpane"> <!--Code for menu starts here-->
<p class="menu_head">Data Warehousing</p>
<div class="menu_body">
<a href="teradata.php">Teradata Online training</a>
<a href="data-warehousing.php">Informatica Online training</a>
<a href="#">Cognos Online training</a>
</div>
<p class="menu_head">SAP</p>
<div class="menu_body">
<a href="#">SAP BO</a>
<a href="sap-abap.php">SAP ABAP</a>
<a href="#">SAP BI/BW</a>
<a href="#">SAP FICO</a>
<a href="#">SAP HR</a>
</div>
<p class="menu_head">ORACLE</p>
<div class="menu_body">
<a href="#">ORACLE DBA</a>
<a href="#">ORACLE 11g</a>
</div>
<p class="menu_head">SQL</p>
<div class="menu_body">
<a href="#">SQL DBA</a>
</div>
<p class="menu_head">JAVA</p>
<div class="menu_body">
<a href="core-java.php">Core JAVA</a>
<a href="advanced-java.php">Advanced JAVA</a>
</div>
<p class="menu_head">SAS</p>
<div class="menu_body">
<a href="#">SAS BI</a>
<a href="#">SAS CDM</a>
</div>
<p class="menu_head">Testing Tools</p>
<div class="menu_body">
<a href="#">Manual Testing+QTP Training</a>
<a href="#">ETL Testing</a>
<a href="#">SELENIUM Training</a>
</div>
<p class="menu_head">Android Training</p>
<div class="menu_body">
<a href="android.php">Android Course</a>
</div>
<p class="menu_head">Sharepoint Training</p>
<p class="menu_head">.NET Training</p>
<div class="menu_body">
<a href="#">ASP .NET Training</a>
<a href="#">C# Training</a>
</div>
</div>
add these styles
@charset "utf-8";
/* CSS Document */
body {
margin: 10px auto;
font: 105%/140% Verdana,Arial, Helvetica, sans-serif;
}
.menu_list {
width:250px;
}
.menu_head {
padding: 5px 10px;
cursor: pointer;
position: relative;
margin:1px;
font-weight:bold;
background:#83C7DA url(left.png) center right no-repeat;
font-size:15px;
color:black;
border-radius:5px;
}
.menu_body {
display:none;
}
.menu_body a{
display:block;
color:#C00;
background-color:#EFEFEF;
padding-left:10px;
font-weight:bold;
text-decoration:none;
}
.menu_body a:hover{
color: #000000;
text-decoration:underline;
}
integrate jQuery.js library then only it will work.....
<script type="text/javascript" language="javascript" src="jquery.js"></script>
<script type="text/javascript">
<!--//---------------------------------+
// Developed by Roshan Bhattarai
// Visit http://roshanbh.com.np for this script and more.
// This notice MUST stay intact for legal use
// --------------------------------->
$(document).ready(function()
{
//slides the element with class "menu_body" when mouse is over the paragraph
$("#secondpane p.menu_head").mouseover(function()
{
$(this).css({backgroundImage:"url(down.png)"}).next("div.menu_body").slideDown(500).siblings("div.menu_body").slideUp("slow");
$(this).siblings().css({backgroundImage:"url(left.png)"});
});
});
</script>