A QueryPath Tutorial(一個簡 " /> 在线免费观看毛片,国产在线亚洲精品观看不卡,啊灬啊灬啊灬快灬深高潮啦

天天躁日日躁狠狠躁AV麻豆-天天躁人人躁人人躁狂躁-天天澡夜夜澡人人澡-天天影视香色欲综合网-国产成人女人在线视频观看-国产成人女人视频在线观看

QueryPath PHP 中的jQuery

官方主頁  http://querypath.org/

QP API 手冊  http://api.querypath.org/docs/QueryPath(QP)庫 在 php 中實現了類似于 jQuery 的效果,用它還可以方便地處理 XML HTML...功能太強大了!!!

A QueryPath Tutorial(一個簡易說明)
QueryPath makes use of method chaining to provide a concise suite of tools for manipulating a DOM.
The basic principle of method chaining is that each method returns an object upon which additional methods can be called. In our case, the QueryPath object usually returns itself.
Let's take a look at an example to illustrate:
$qp = qp(QueryPath::HTML_STUB); // Generate a new QueryPath object.(創建一個 QP 對象)
$qp2 = $qp->find('body'); // Find the body tag.(找到 "body" 標簽)
// Now the surprising part:(請看下面讓你驚奇的地方)
if ($qp === $qp2) {
// This will always get printed.(它總是會這樣輸出)
print "MATCH";
}
Why does $qp always equal $qp2? Because the find() function does all of its data gathering and then returns the QueryPath object.
This might seem esoteric, but it all has a very practical rationale. With this sort of interface, we can chain lots of methods together:
(你可以向使用 jQuery 一樣來連綴方法)
qp(QueryPath::HTML_STUB)->find('body')->text('Hello World')->writeHTML();
In this example, we have four method calls:
qp(QueryPath::HTML_STUB): Create a new QueryPath object and provide it with a stub of an HTML document. This returns the QueryPath object.
find('body'): This searches the QueryPath document looking for an element named 'body'. That element is, of course, the <body></body> portion of the HTML document. When it finds the body element, it keeps an internal pointer to that element, and it returns the QueryPath object (which is now wrapping the body element).
text('Hello World'): This function takes the current element(s) wrapped by QueryPath and adds the text Hello World. As you have probably guessed, it, too, returns a QueryPath object. The object will still be pointing to the body element.
writeHTML(): The writeHTML() function prints out the entire document. This is used to send the HTML back to the client. You'll never guess what this function returns. Okay, you guessed it. QueryPath.
So at the end of the chain above, we would have created a document that looks something like this:
復制代碼 代碼如下:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"></meta>
<title>Untitled</title>
</head>
<body>Hello World</body>
</html>

Most of that HTML comes from the QueryPath::HTML_STUB. All we did was add the Hello World text inside of the <body></body> tags.
Not all QueryPath functions return QueryPath objects. Some tools need to return other data. But those functions are well-documented in the included documentation.
These are the basic principles behind QueryPath. Now let's take a look at a larger example that exercises more of the QueryPath API.
A Longer Example
This example illustrates various core features of QueryPath.
In this example, we use some of the standard QueryPath functions (most of them implementing the jQuery interface) to build a new web page from scratch.
Each line of the code has been commented individually. The output from this is shown in a separate block beneath.
復制代碼 代碼如下:
<?php
/**
* Using QueryPath.
*
* This file contains an example of how QueryPath can be used
* to generate web pages.
* @package QueryPath
* @subpackage Examples
* @author M Butcher <matt@aleph-null.tv>
* @license LGPL The GNU Lesser GPL (LGPL) or an MIT-like license.
*/
// Require the QueryPath core.
require_once 'QueryPath/QueryPath.php';
// Begin with an HTML stub document (XHTML, actually), and navigate to the title.
qp(QueryPath::HTML_STUB, 'title')
// Add some text to the title
->text('Example of QueryPath.')
// Now look for the <body> element
->find(':root body')
// Inside the body, add a title and paragraph.
->append('<h1>This is a test page</h1><p>Test text</p>')
// Now we select the paragraph we just created inside the body
->children('p')
// Add a 'class="some-class"' attribute to the paragraph
->attr('class', 'some-class')
// And add a style attribute, too, setting the background color.
->css('background-color', '#eee')
// Now go back to the paragraph again
->parent()
// Before the paragraph and the title, add an empty table.
->prepend('<table id="my-table"></table>')
// Now let's go to the table...
->find('#my-table')
// Add a couple of empty rows
->append('<tr></tr><tr></tr>')
// select the rows (both at once)
->children()
// Add a CSS class to both rows
->addClass('table-row')
// Now just get the first row (at position 0)
->eq(0)
// Add a table header in the first row
->append('<th>This is the header</th>')
// Now go to the next row
->next()
// Add some data to this row
->append('<td>This is the data</td>')
// Write it all out as HTML
->writeHTML();
?>

The code above produces the following HTML:
復制代碼 代碼如下:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"></meta>
<title>Example of QueryPath.</title>
</head>
<body>
<table id="my-table">
<tr class="table-row"><th>This is the header</th></tr>
<tr class="table-row"><td>This is the data</td></tr>
</table>
<h1>This is a test page</h1>
<p class="some-class" style="background-color: #eee">Test text</p></body>
</html>

Now you should have an idea of how QueryPath works. Grab a copy of the library and try it out! Along with the source code, you will get a nice bundle of HTML files that cover every single public function in the QueryPath library (no kidding). There are more examples there, too.
不錯的東東!趕緊 Grab 它吧~~!

php技術QueryPath PHP 中的jQuery,轉載需保留來源!

鄭重聲明:本文版權歸原作者所有,轉載文章僅為傳播更多信息之目的,如作者信息標記有誤,請第一時間聯系我們修改或刪除,多謝。

主站蜘蛛池模板: 性刺激欧美三级在线现看中文 | 99久久中文字幕伊人情人 | 伊人青青草原 | 777久久人妻少妇嫩草AV | 日日久久狠狠8888偷偷色 | 国产成人a一在线观看 | 啪啪啪社区 | 国产精品亚洲精品久久国语 | 亚洲AV无码专区国产精品麻豆 | 久久国产视频网 | 久久久久久九九 | 亚洲精品视频免费在线观看 | 欧美18videosex性欧美老师 | 国产精品无码亚洲精品 | 91蜜桃视频 | 亚洲精品久久久无码AV片软件 | 一个人看的HD免费高清视频 | 美女被强奷到抽搐的动态图 | 亚洲国产在线精品国偷产拍 | 色狼亚洲色图 | 洲精品无码高潮喷水A片 | 福利社影院 | 把英语老师强奷到舒服动态图 | 精选国产AV精选一区二区三区 | 久久中文字幕人妻熟AV女蜜柚M | 99热都是精品 | 少女开女包www | 中文字幕精品无码一区二区 | 精品亚洲国产熟女福利自在线 | 日韩AV爽爽爽久久久久久 | 久久高清内射无套 | 日本无卡无吗在线 | 色橹橹欧美在线观看视频高清 | 国产日韩欧美三级 | 十分钟免费观看高清视频大全 | 亚洲AV美女成人网站P站 | 国产偷国产偷亚洲高清app | 国产精品99久久免费黑人人妻 | 亚洲视频第二页 | 国产午夜精品自在自线之la | 试看2分钟AA片 |