向jquery移动站点添加数据库 [英] Adding a database to jquery mobile site
问题描述
我对使用jquery和jquery mobile很陌生,但是我想知道是否有一种简单的方法(最好是教程)将数据库(远程和本地)绑定到jquery mobile站点(最好不使用php) .
I'm pretty new to using jquery and jquery mobile, but I was wondering if there was a simple way (or tutorial preferably) to tie a database (remote and local) to a jquery mobile site (preferably not using php).
推荐答案
您可以通过JavaScript使用HTML5 localStorage,这是说明和一些教程链接:
You can use HTML5 localStorage via JavaScript, here is an explanation and some links to tutorials: http://www.html5rocks.com/en/features/storage
...现在有多种技术允许应用程序将数据保存在 客户端设备...
...there are now several technologies allowing the app to save data on the client device...
如果要与服务器交互,则需要使用服务器端脚本语言.使用AJAX与服务器通信非常容易:
If you want to interact with your server then you're going to need to use a server-side scripting language. It's fairly easy to use AJAX to communicate with your server:
JS-
//run the following code whenever a new pseudo-page is created
$(document).delegate('[data-role="page"]', 'pagecreate', function () {
//cache this page for later use (inside the AJAX function)
var $this = $(this);
//make an AJAX call to your PHP script
$.getJSON('path_to/server/script.php', function (response) {
//create a variable to hold the parsed output from the server
var output = [];
//if the PHP script returned a success
if (response.status == 'success') {
//iterate through the response rows
for (var key in response.items) {
//add each response row to the output variable
output.push('<li>' + response.items[key] + '</li>');
}
//if the PHP script returned an error
} else {
//output an error message
output.push('<li>No Data Found</li>');
}
//append the output to the `data-role="content"` div on this page as a listview and trigger the `create` event on its parent to style the listview
$this.children('[data-role="content"]').append('<ul data-role="listview">' + output.join('') + '</ul>').trigger('create');
});
});
PHP-
<?php
//include your database connection code
include_once('database-connection.php');
//query your MySQL server for whatever information you want
$query = mysql_query("SELCT * FROM fake_table WHERE fake_col='fake value'", $db) or trigger_error(mysql_error());
//create an output array
$output = array();
//if the MySQL query returned any results
if (mysql_affected_rows() > 0) {
//iterate through the results of your query
while ($row = mysql_fetch_assoc($query)) {
//add the results of your query to the output variable
$output[] = $row;
}
//send your output to the browser encoded in the JSON format
echo json_encode(array('status' => 'success', 'items' => $output));
} else {
//if no records were found in the database then output an error message encoded in the JSON format
echo json_encode(array('status' => 'error', 'items' => $output));
}
?>
您还可以将数据发送到PHP脚本并将其添加到数据库中.
You can also send data to your PHP script and have it added to a database.
以下是上面使用的功能的一些文档页面:
Here are some documentation pages for functions used above:
jQuery .getJSON()
: http://api.jquery.com/jquery.getjson
PHP json_encode()
: http://www.php.net/json_encode
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