Home Backend Development PHP Tutorial PHP结合jQuery.autocomplete插件实现输入自动完成提示的功能_php实例

PHP结合jQuery.autocomplete插件实现输入自动完成提示的功能_php实例

Jun 07, 2016 pm 05:13 PM
jquery Auto prompt

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。

复制代码 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:

复制代码 代码如下:


jQuery

复制代码 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 ;
Copy after login


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 
Copy after login

最后输出的JSON数据格式为:

复制代码 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); 
}); 
Copy after login

以上所述就是本文的全部内容了,希望大家能够喜欢。

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)

Detailed explanation of jQuery reference methods: Quick start guide Detailed explanation of jQuery reference methods: Quick start guide Feb 27, 2024 pm 06:45 PM

Detailed explanation of jQuery reference method: Quick start guide jQuery is a popular JavaScript library that is widely used in website development. It simplifies JavaScript programming and provides developers with rich functions and features. This article will introduce jQuery's reference method in detail and provide specific code examples to help readers get started quickly. Introducing jQuery First, we need to introduce the jQuery library into the HTML file. It can be introduced through a CDN link or downloaded

How to use PUT request method in jQuery? How to use PUT request method in jQuery? Feb 28, 2024 pm 03:12 PM

How to use PUT request method in jQuery? In jQuery, the method of sending a PUT request is similar to sending other types of requests, but you need to pay attention to some details and parameter settings. PUT requests are typically used to update resources, such as updating data in a database or updating files on the server. The following is a specific code example using the PUT request method in jQuery. First, make sure you include the jQuery library file, then you can send a PUT request via: $.ajax({u

In-depth analysis: jQuery's advantages and disadvantages In-depth analysis: jQuery's advantages and disadvantages Feb 27, 2024 pm 05:18 PM

jQuery is a fast, small, feature-rich JavaScript library widely used in front-end development. Since its release in 2006, jQuery has become one of the tools of choice for many developers, but in practical applications, it also has some advantages and disadvantages. This article will deeply analyze the advantages and disadvantages of jQuery and illustrate it with specific code examples. Advantages: 1. Concise syntax jQuery's syntax design is concise and clear, which can greatly improve the readability and writing efficiency of the code. for example,

How to remove the height attribute of an element with jQuery? How to remove the height attribute of an element with jQuery? Feb 28, 2024 am 08:39 AM

How to remove the height attribute of an element with jQuery? In front-end development, we often encounter the need to manipulate the height attributes of elements. Sometimes, we may need to dynamically change the height of an element, and sometimes we need to remove the height attribute of an element. This article will introduce how to use jQuery to remove the height attribute of an element and provide specific code examples. Before using jQuery to operate the height attribute, we first need to understand the height attribute in CSS. The height attribute is used to set the height of an element

jQuery Tips: Quickly modify the text of all a tags on the page jQuery Tips: Quickly modify the text of all a tags on the page Feb 28, 2024 pm 09:06 PM

Title: jQuery Tips: Quickly modify the text of all a tags on the page In web development, we often need to modify and operate elements on the page. When using jQuery, sometimes you need to modify the text content of all a tags in the page at once, which can save time and energy. The following will introduce how to use jQuery to quickly modify the text of all a tags on the page, and give specific code examples. First, we need to introduce the jQuery library file and ensure that the following code is introduced into the page: &lt

Use jQuery to modify the text content of all a tags Use jQuery to modify the text content of all a tags Feb 28, 2024 pm 05:42 PM

Title: Use jQuery to modify the text content of all a tags. jQuery is a popular JavaScript library that is widely used to handle DOM operations. In web development, we often encounter the need to modify the text content of the link tag (a tag) on ​​the page. This article will explain how to use jQuery to achieve this goal, and provide specific code examples. First, we need to introduce the jQuery library into the page. Add the following code in the HTML file:

How to tell if a jQuery element has a specific attribute? How to tell if a jQuery element has a specific attribute? Feb 29, 2024 am 09:03 AM

How to tell if a jQuery element has a specific attribute? When using jQuery to operate DOM elements, you often encounter situations where you need to determine whether an element has a specific attribute. In this case, we can easily implement this function with the help of the methods provided by jQuery. The following will introduce two commonly used methods to determine whether a jQuery element has specific attributes, and attach specific code examples. Method 1: Use the attr() method and typeof operator // to determine whether the element has a specific attribute

Understand the role and application scenarios of eq in jQuery Understand the role and application scenarios of eq in jQuery Feb 28, 2024 pm 01:15 PM

jQuery is a popular JavaScript library that is widely used to handle DOM manipulation and event handling in web pages. In jQuery, the eq() method is used to select elements at a specified index position. The specific usage and application scenarios are as follows. In jQuery, the eq() method selects the element at a specified index position. Index positions start counting from 0, i.e. the index of the first element is 0, the index of the second element is 1, and so on. The syntax of the eq() method is as follows: $("s

See all articles