如何从另一个域通过ajax加载css文件?

时间:2010-11-25 11:05:14

标签: jquery ajax cross-browser cross-domain

如何通过来自其他域的ajax使用jQuery加载css文件?

下载后拨打我的回叫 - 所以我可以继续工作。

2 个答案:

答案 0 :(得分:1)

如果您可以访问可以运行服务器端代码的服务器,那么您可以采取以下措施:

要求

  • 用于调用位于同一服务器上的scraper的jQuery脚本
  • 处理url抓取的服务器端语言(在这种情况下,使用PHP w / curl)

PHP Scraper

<?php

/**
 * Receives a url and optional callback, scrapes the url, and returns the results
 * @author Jason Featheringham
 * @link http://thejase.com
 */

/**
 * Retrieves a web page, including content, error and header information
 * @param string $url A web address to fetch
 * @return array The results of the screen scrape attempt
 */
function get_web_page( $url )
{
    $options = array(
        CURLOPT_RETURNTRANSFER => true,     // return web page
        CURLOPT_HEADER         => false,    // don't return headers
        CURLOPT_FOLLOWLOCATION => true,     // follow redirects
        CURLOPT_ENCODING       => "",       // handle all encodings
        CURLOPT_USERAGENT      => "spider", // who am i
        CURLOPT_AUTOREFERER    => true,     // set referer on redirect
        CURLOPT_CONNECTTIMEOUT => 120,      // timeout on connect
        CURLOPT_TIMEOUT        => 120,      // timeout on response
        CURLOPT_MAXREDIRS      => 10,       // stop after 10 redirects
    );

    $ch                         = curl_init( $url );
    curl_setopt_array( $ch, $options );
    $result                     = curl_getinfo( $ch );
    $result['content']          = curl_exec( $ch );
    $result['error']['number']  = curl_errno( $ch );
    $result['error']['message'] = curl_error( $ch );
    curl_close( $ch );

    return $result;
}

// either fetch web page or generate error message for result
$result = json_encode( ( $url = $_GET['url'] )
                     ? get_web_page( $url )
                     : Array( "error" => Array( "message" => "You must specify a url parameter." ) ) );

// if callback is specified, return JSONP result, otherwise just JSON
echo ( $callback = $_GET['callback'] )
     ? header("text/javascript")    ?: "$callback($result);"
     : header("application/json")   ?: $result;
?>

jQuery代码

$.getJSON( "scraper.php?url=http://www.yahoo.com&callback=?", function(result) {
    if( result.error ) {
        // handle error
    }

    // otherwise, use the result object (usually result.content) as you see fit
    // ...
});

答案 1 :(得分:0)

由于same origin policy限制,您无法实现此目的。而不是使用AJAX,为什么不直接使用<link>标签包含那些CSS样式?