本文简单实现jQuery无限级联效果,分享给大家供大家参考,具体内容如下
效果图:
图1 仅下拉框
图2 层级提示+下拉框
图3 存储数据点击响应
主要包含3个文件:index.html(主页),wuxianjilian.php(数据处理),wuxianjilian.sql(MySQL数据文件)
1. index.html
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2. wuxianjilian.php
<?php header("Content-type: text/html; charset=utf-8"); //数据库连接操作 $conn = mysql_connect("localhost","Zjmainstay","") or die("Can not connect to database.Fatal error handle by ". __FILE__); mysql_select_db("test",$conn); //数据库名为 test mysql_query("SET NAMES utf8",$conn); //获取父级id $pid = (int)$_POST['pid']; //查询子级 $sql = "SELECT id,text FROM `wuxianjilian` WHERE pid={$pid}"; $result = mysql_query($sql,$conn); //组装子级下拉菜单 $html = ''; while($row = mysql_fetch_assoc($result)){ $html .= ''; } if(!empty($html)) $html = ''; //输出下拉菜单 echo json_encode($html); //End_php
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3. wuxianjilian.sql
wuxianjilian.sql /* Navicat MySQL Data Transfer Source Server : localhost Source Server Version : 50516 Source Host : localhost:3306 Source Database : test Target Server Type : MYSQL Target Server Version : 50516 File Encoding : 65001 Date: 2012-10-24 20:59:09 */ SET FOREIGN_KEY_CHECKS=0; -- ---------------------------- -- Table structure for `wuxianjilian` -- ---------------------------- DROP TABLE IF EXISTS `wuxianjilian`; CREATE TABLE `wuxianjilian` ( `id` int(11) NOT NULL AUTO_INCREMENT, `pid` int(11) DEFAULT NULL, `text` varchar(32) DEFAULT NULL, PRIMARY KEY (`id`) ) ENGINE=InnoDB AUTO_INCREMENT=22 DEFAULT CHARSET=utf8; -- ---------------------------- -- Records of wuxianjilian -- ---------------------------- INSERT INTO `wuxianjilian` VALUES ('1', '0', 'A0'); INSERT INTO `wuxianjilian` VALUES ('2', '0', 'B0'); INSERT INTO `wuxianjilian` VALUES ('3', '1', 'C1'); INSERT INTO `wuxianjilian` VALUES ('4', '1', 'D1'); INSERT INTO `wuxianjilian` VALUES ('5', '1', 'E1'); INSERT INTO `wuxianjilian` VALUES ('6', '2', 'F2'); INSERT INTO `wuxianjilian` VALUES ('7', '2', 'G2'); INSERT INTO `wuxianjilian` VALUES ('8', '3', 'H3'); INSERT INTO `wuxianjilian` VALUES ('9', '3', 'I3'); INSERT INTO `wuxianjilian` VALUES ('10', '3', 'J3'); INSERT INTO `wuxianjilian` VALUES ('11', '3', 'K3'); INSERT INTO `wuxianjilian` VALUES ('12', '4', 'L4'); INSERT INTO `wuxianjilian` VALUES ('13', '4', 'M4'); INSERT INTO `wuxianjilian` VALUES ('14', '8', 'N8'); INSERT INTO `wuxianjilian` VALUES ('15', '9', 'N9'); INSERT INTO `wuxianjilian` VALUES ('16', '14', 'O14'); INSERT INTO `wuxianjilian` VALUES ('17', '14', 'P14'); INSERT INTO `wuxianjilian` VALUES ('18', '14', 'Q14'); INSERT INTO `wuxianjilian` VALUES ('19', '17', 'R17'); INSERT INTO `wuxianjilian` VALUES ('20', '17', 'S18'); INSERT INTO `wuxianjilian` VALUES ('21', '20', 'T20');
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希望本文所述对大家学习jquery程序设计有所帮助。