使用JavaScript获取链接标签的内容-不是CSS [英] Get contents of a link tag with JavaScript - not CSS
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问题描述
假定我有
<LINK rel="Index" href="index.html">
<LINK rel="Next" href="Chapter3.html">
<LINK rel="Prev" href="Chapter1.html">
(摘录于 W3C 网站示例)
可以通过JavaScript DOM访问吗?
Are these accessible through the JavaScript DOM?
我想知道是否在HTML文档中是否具有这样的链接标签,是否像主文档一样阅读它们并将其添加到DOM中,以及是否也可以访问它们的DOM。
I want to know if I have link tags like this in the HTML document, whether they are read like the main document and added to the DOM and if I can access their DOMs as well.
推荐答案
我有以下代码:
<script type="text/javascript">
var your_url = 'http://www.example.com';
</script>
<script type="text/javascript" src="//ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js" ></script>
<script type="text/javascript">
// jquery.xdomainajax.js ------ from padolsey
jQuery.ajax = (function(_ajax){
var protocol = location.protocol,
hostname = location.hostname,
exRegex = RegExp(protocol + '//' + hostname),
YQL = 'http' + (/^https/.test(protocol)?'s':'') + '://query.yahooapis.com/v1/public/yql?callback=?',
query = 'select * from html where url="{URL}" and xpath="*"';
function isExternal(url) {
return !exRegex.test(url) && /:\/\//.test(url);
}
return function(o) {
var url = o.url;
if ( /get/i.test(o.type) && !/json/i.test(o.dataType) && isExternal(url) ) {
// Manipulate options so that JSONP-x request is made to YQL
o.url = YQL;
o.dataType = 'json';
o.data = {
q: query.replace(
'{URL}',
url + (o.data ?
(/\?/.test(url) ? '&' : '?') + jQuery.param(o.data)
: '')
),
format: 'xml'
};
// Since it's a JSONP request
// complete === success
if (!o.success && o.complete) {
o.success = o.complete;
delete o.complete;
}
o.success = (function(_success){
return function(data) {
if (_success) {
// Fake XHR callback.
_success.call(this, {
responseText: data.results[0]
// YQL screws with <script>s
// Get rid of them
.replace(/<script[^>]+?\/>|<script(.|\s)*?\/script>/gi, '')
}, 'success');
}
};
})(o.success);
}
return _ajax.apply(this, arguments);
};
})(jQuery.ajax);
$.ajax({
url: your_url,
type: 'GET',
success: function(res) {
var text = res.responseText;
// then you can manipulate your text as you wish
alert(text);
}
});
</script>
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