Table of Contents
PHP+Mysql+jQuery查询和列表框选择操作实例讲解,jquery实例讲解
Home php教程 php手册 PHP+Mysql+jQuery查询和列表框选择操作实例讲解,jquery实例讲解

PHP+Mysql+jQuery查询和列表框选择操作实例讲解,jquery实例讲解

Jun 13, 2016 am 08:52 AM
jquery php list box Inquire

PHP+Mysql+jQuery查询和列表框选择操作实例讲解,jquery实例讲解

本文讲解如何通过ajax查询mysql数据,并将返回的数据显示在待选列表中,再通过选择最终将选项加入到已选区,可以用在许多后台管理系统中。本文列表框的操作依赖jquery插件。

HTML

<form id="sel_form" action="post.php" method="post"> 
  <p><input type="text" name="keys" id="keys" value="输入姓名或手机号码" onclick="this.value=''" /> 
  <input type="button" id="searchOption" value="搜索" /> <span id="msg_ser"></span></p> 
  <div id="sel"> 
  <select name="liOption[]" id='liOption' multiple='multiple' size='8'> 
  </select> 
  </div> 
  <input type="submit" value="提 交" /> 
</form> 
Copy after login

说明,HTML内容是一个表单,里面放置有一个查询输入框,和一个列表框,以及相关按钮。

MYSQL数据表结构

CREATE TABLE IF NOT EXISTS `t_mult` ( 
 `id` int(11) NOT NULL auto_increment, 
 `username` varchar(32) NOT NULL, 
 `phone` varchar(20) NOT NULL, 
 PRIMARY KEY (`id`) 
) ENGINE=MyISAM DEFAULT CHARSET=utf8; 
Copy after login

表t_mult是一张联系人资料表,包括姓名和手机号码字段。

CSS

<link rel="stylesheet" type="text/css" href="jquery.multiselect2side.css" /> 
Copy after login

本例中只加载了Multiselect插件所需的样式文件,其他CSS大家可以自行设计。
JAVASCRIPT
首先需要引用本例所需的两个js文件。

 
 
<link rel="stylesheet" type="text/css" href="jquery.multiselect2side.css" /> 
Copy after login

接着我们来调用Multiselect插件。

$("#liOption").multiselect2side({ 
  selectedPosition: 'right', 
  moveOptions: false, 
  labelsx: '待选区', 
  labeldx: '已选区' 
}); 
Copy after login

然后我们来写搜索按钮进行Ajax查询数据的操作。

$("#searchOption").click(function(){ 
  var keys=$("#keys").val(); 
  $.ajax({ 
     type: "POST", 
     url: "action.php", 
     data: "title="+keys, 
     success: function(msg){ 
      if(msg==1){ 
        $("#msg_ser").show().html("没有记录!"); 
      }else{ 
        $("#liOptionms2side__sx").html(msg); 
        $("#msg_ser").html(""); 
      } 
     } 
  }); 
  $("#msg_ser").ajaxSend(function(event, request, settings){ 
    $(this).html(""); 
  }); 
}); 
Copy after login

说明,当点击搜索按钮时,进行的是Ajax异步操作,JAVASCRIPT将获取的搜索框的输入值,以POST方式传递给后台程序action.php处理,处理后,返回不同的结果给JAVASCRIPT,如果返回1,HTML页面会提示“没有记录”,反之,则将结果输出给左边列表框(待选区):liOptionms2side__sx。注意关键的地方到了,为什么列表框不是XHTML离的liOption,而变成了liOptionms2side__sx了呢?这个要从Multiselect插件说起,Multiselect插件其实就是将一个列表框装换成左右两个列表框,已供相关操作,通过查看其插件代码不难发现,左边的列表框名为:liOptionms2side__sx,右边列表框(已选区)名为:liOptionms2side__dx,后面会用到。

PHP

首先来看action.php的处理。
第一步是连接数据库。

$conn=mysql_connect("localhost","root",""); 
mysql_select_db("demo",$conn); 
mysql_query("SET names UTF8"); 
Copy after login

第二步读取数据,并输出。通过检测搜索框传来的值,构造不同的SQL语句,并将数据返回输出,代码如下:

$keys=trim($_POST['title']); 
$keys=mysql_real_escape_string($keys,$conn); 
if(!empty($keys)){ 
   $sql="select * from t_mult where username like '%$keys%' or phone='$keys'"; 
}else{ 
   $sql="select * from t_mult"; 
} 
$query=mysql_query($sql); 
$count=mysql_num_rows($query); 
if($count>0){ 
  while($row=mysql_fetch_array($query)){ 
    $str.="<option value='".$row['id']."'>".$row['username']."-".$row['phone']."</option>"; 
  } 
  echo $str; 
}else{ 
  echo "1"; 
} 
Copy after login

最后还有一个提交操作,后台post.php程序来获取最终提交的项的值。

$selID=$_POST['liOptionms2side__dx']; 
if(!empty($selID)){ 
  $str=implode(",",$selID); 
  echo $str; 
}else{ 
  echo "没有选择任何项目!"; 
} 
Copy after login

注意,我们获取的是右边列表框liOptionms2side__dx的值,而不是liOption的值。
一个查询、操作的例子实现了,但是还有一点点瑕疵,在待选区往已选区添加项目时,如何判断控制已经添加过的项目不能重复添加,这个就留给大家思考吧,试一试有什么好的解决方式。

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian Dec 24, 2024 pm 04:42 PM

PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

7 PHP Functions I Regret I Didn't Know Before 7 PHP Functions I Regret I Didn't Know Before Nov 13, 2024 am 09:42 AM

If you are an experienced PHP developer, you might have the feeling that you’ve been there and done that already.You have developed a significant number of applications, debugged millions of lines of code, and tweaked a bunch of scripts to achieve op

How To Set Up Visual Studio Code (VS Code) for PHP Development How To Set Up Visual Studio Code (VS Code) for PHP Development Dec 20, 2024 am 11:31 AM

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

Explain JSON Web Tokens (JWT) and their use case in PHP APIs. Explain JSON Web Tokens (JWT) and their use case in PHP APIs. Apr 05, 2025 am 12:04 AM

JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,

PHP Program to Count Vowels in a String PHP Program to Count Vowels in a String Feb 07, 2025 pm 12:12 PM

A string is a sequence of characters, including letters, numbers, and symbols. This tutorial will learn how to calculate the number of vowels in a given string in PHP using different methods. The vowels in English are a, e, i, o, u, and they can be uppercase or lowercase. What is a vowel? Vowels are alphabetic characters that represent a specific pronunciation. There are five vowels in English, including uppercase and lowercase: a, e, i, o, u Example 1 Input: String = "Tutorialspoint" Output: 6 explain The vowels in the string "Tutorialspoint" are u, o, i, a, o, i. There are 6 yuan in total

How do you parse and process HTML/XML in PHP? How do you parse and process HTML/XML in PHP? Feb 07, 2025 am 11:57 AM

This tutorial demonstrates how to efficiently process XML documents using PHP. XML (eXtensible Markup Language) is a versatile text-based markup language designed for both human readability and machine parsing. It's commonly used for data storage an

Explain late static binding in PHP (static::). Explain late static binding in PHP (static::). Apr 03, 2025 am 12:04 AM

Static binding (static::) implements late static binding (LSB) in PHP, allowing calling classes to be referenced in static contexts rather than defining classes. 1) The parsing process is performed at runtime, 2) Look up the call class in the inheritance relationship, 3) It may bring performance overhead.

What are PHP magic methods (__construct, __destruct, __call, __get, __set, etc.) and provide use cases? What are PHP magic methods (__construct, __destruct, __call, __get, __set, etc.) and provide use cases? Apr 03, 2025 am 12:03 AM

What are the magic methods of PHP? PHP's magic methods include: 1.\_\_construct, used to initialize objects; 2.\_\_destruct, used to clean up resources; 3.\_\_call, handle non-existent method calls; 4.\_\_get, implement dynamic attribute access; 5.\_\_set, implement dynamic attribute settings. These methods are automatically called in certain situations, improving code flexibility and efficiency.

See all articles