search
HomeBackend DevelopmentPHP TutorialPHP结合jQuery.autocomplete插件实现输入自动完成提示的功能_PHP

我们在很多项目中使用了搜索功能来帮助用户更快更准确的找到想要的信息。本文将介绍如何实现用户输入自动提示的功能,就像谷歌百度搜索引擎一样,当用户输入关键字时,输入框下方会有提示,将与关键字相关的信息展现出来供用户选择,提升了用户体验。

本文将使用jquery ui的autocomplete插件,结合后端PHP,数据源通过PHP读取mysql数据表的数据。

XHTML

首先将jquery库和相关ui插件,以及css导入。

代码如下:








jQuery ui 插件可以在官网上下载:
接着在body中写一个输入框:

代码如下:



jQuery

代码如下:


$(function(){
    $("#key").autocomplete({
        source: "search.php",
        minLength: 2
    });
});

一看就明白,调用autocomplete插件,数据源来自search.php,当用户输入1个字符的时候就调用数据源。autocomplte插件提供了几个可配置的参数:
disabled:是否在页面加载后不可用,默认为false,这个没必要设置成true,没有多大意义。
appendTo:输入时下拉的提示框追加元素,默认为"body"。
autoFocus:默认为false,当设置成true时,下拉提示框第一个将会是被选中的状态。
delay:加载数据时的延迟时间,默认为300,单位毫秒。
minLength:输入多少个字符时就会出现下拉提示,默认为1。
position:定义下拉提示框的位置。
source:定义数据源,数据源必须是json形式的,本例是通过请求search.php获取的数据源。
autocomplete还提供了许多事件和方法,详情请查看其官网:

PHP

调用了autocomplete插件后,还并没有提示效果,别着急,因为需要调用数据源。
首先我们需要一张表,并要往表中添加适量数据,表的结构如下:

CREATE TABLE `art` ( 
 `id` int(11) NOT NULL auto_increment, 
 `title` varchar(100) NOT NULL, 
 PRIMARY KEY (`id`) 
) ENGINE=MyISAM DEFAULT CHARSET=utf8 ;

 
请自行建表,并往表art中添加数据。

search.php实现了连接Mysql数据库,并根据前端用户的输入,查询并获取数据表中相匹配的内容,然后以JSON形式输出。

include_once("connect.php"); //连接数据库 
 
$q = strtolower($_GET["term"]); //获取用户输入的内容 
$query=mysql_query("select * from art where title like '$q%' limit 0,10"); 
//查询数据库,并将结果集组成数组 
while ($row=mysql_fetch_array($query)) { 
  $result[] = array( 
    'id' => $row['id'], 
    'label' => $row['title'] 
  ); 
} 
echo json_encode($result); //输出JSON数据 

最后输出的JSON数据格式为:

代码如下:


[{"id":"3","title":"\u4f7f\u7528CSS\u548cjQuery\u5236\u4f5c\u6f02\u4eae\u7684\u4e0b
\u62c9\u9009\u9879\u83dc\u5355"},
{"id":"4","title":"\u4f7f\u7528jQuery\u548cCSS\u63a7\u5236\u9875\u9762\u6253\u5370
\u533a\u57df"}]

这时,再测试下输入,是不是看到你要的效果了呢?
最后,值得一提的是,autocomplete插件在firefox上有一个输入BUG,输入后并不能提示,需要向前空格再退格才有提示。网上有很多同学给出了解决方案,但是目前最新的autocomplete插件代码貌视进行了重构,我的解决方法是,在133行中加入如下代码:

.bind("input.autocomplete",function(){ 
  //修复FF不支持中文bug 
  self.search(self.item); 
}); 

以上所述就是本文的全部内容了,希望大家能够喜欢。

Statement
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
Explain the concept of session locking.Explain the concept of session locking.Apr 29, 2025 am 12:39 AM

Sessionlockingisatechniqueusedtoensureauser'ssessionremainsexclusivetooneuseratatime.Itiscrucialforpreventingdatacorruptionandsecuritybreachesinmulti-userapplications.Sessionlockingisimplementedusingserver-sidelockingmechanisms,suchasReentrantLockinJ

Are there any alternatives to PHP sessions?Are there any alternatives to PHP sessions?Apr 29, 2025 am 12:36 AM

Alternatives to PHP sessions include Cookies, Token-based Authentication, Database-based Sessions, and Redis/Memcached. 1.Cookies manage sessions by storing data on the client, which is simple but low in security. 2.Token-based Authentication uses tokens to verify users, which is highly secure but requires additional logic. 3.Database-basedSessions stores data in the database, which has good scalability but may affect performance. 4. Redis/Memcached uses distributed cache to improve performance and scalability, but requires additional matching

What is the full form of PHP?What is the full form of PHP?Apr 28, 2025 pm 04:58 PM

The article discusses PHP, detailing its full form, main uses in web development, comparison with Python and Java, and its ease of learning for beginners.

How does PHP handle form data?How does PHP handle form data?Apr 28, 2025 pm 04:57 PM

PHP handles form data using $\_POST and $\_GET superglobals, with security ensured through validation, sanitization, and secure database interactions.

What is the difference between PHP and ASP.NET?What is the difference between PHP and ASP.NET?Apr 28, 2025 pm 04:56 PM

The article compares PHP and ASP.NET, focusing on their suitability for large-scale web applications, performance differences, and security features. Both are viable for large projects, but PHP is open-source and platform-independent, while ASP.NET,

Is PHP a case-sensitive language?Is PHP a case-sensitive language?Apr 28, 2025 pm 04:55 PM

PHP's case sensitivity varies: functions are insensitive, while variables and classes are sensitive. Best practices include consistent naming and using case-insensitive functions for comparisons.

How do you redirect a page in PHP?How do you redirect a page in PHP?Apr 28, 2025 pm 04:54 PM

The article discusses various methods for page redirection in PHP, focusing on the header() function and addressing common issues like "headers already sent" errors.

Explain type hinting in PHPExplain type hinting in PHPApr 28, 2025 pm 04:52 PM

Article discusses type hinting in PHP, a feature for specifying expected data types in functions. Main issue is improving code quality and readability through type enforcement.

See all articles

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

MantisBT

MantisBT

Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

EditPlus Chinese cracked version

EditPlus Chinese cracked version

Small size, syntax highlighting, does not support code prompt function

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

ZendStudio 13.5.1 Mac

ZendStudio 13.5.1 Mac

Powerful PHP integrated development environment

SecLists

SecLists

SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.