如何选择远程网页的标题 [英] How to pick the title of a remote webpage
问题描述
如何使用javascript读取远程网页的标题?假设网页是:
www.google.com
我想读取该页面的标题;我应该怎么做? 解决方案
您无法单独使用jQuery获取此数据,但是您可以使用jQuery与PHP进行通信,或者其他服务器端语言,可以为您完成繁重的工作。例如,假设我们的服务器上有一个PHP脚本中包含以下内容:
<?php#getTitle.php
if($ _POST [url]){
$ doc = new DOMDocument();
@ $ doc-> loadHTML(file_get_contents($ _POST [url]));
$ xpt = new DOMXPath($ doc);
$ output = $ xpt-> query(// title) - > item(0) - > nodeValue;
} else {
$ output =网址未提供;
}
echo $ output;
?>
有了这个,我们可以有以下jQuery:
$ b $ ($pre> $。post(getTitle.php,{url:'http://example.com'},function(data){
alert(data) ;
});
Possible Duplicate:
how to get title of html page by javascript?
How I can read the title of a remote web page with javascript? Suppose the web page is:
www.google.com
I want to read the title of that page; how should I do this?
You won't be able to get this data with jQuery alone, however you can use jQuery to communicate with PHP, or some other server-side language that can do the heavy lifting for you. For instance, suppose we have the following in a PHP script on our server:
<?php # getTitle.php
if ( $_POST["url"] ) {
$doc = new DOMDocument();
@$doc->loadHTML( file_get_contents( $_POST["url"] ) );
$xpt = new DOMXPath( $doc );
$output = $xpt->query("//title")->item(0)->nodeValue;
} else {
$output = "URL not provided";
}
echo $output;
?>
With this, we could have the following jQuery:
$.post("getTitle.php", { url:'http://example.com' }, function( data ) {
alert(data);
});
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