żywo pracuje skrzypce przykład: http://jsfiddle.net/sc8qp/2/
Tylko dla dobrej miary i kompletności bez regex:
function getIcons() {
var links = document.getElementsByTagName('link');
var icons = [];
for(var i = 0; i < links.length; i++) {
var link = links[i];
//Technically it could be null/undefined if someone didn't set it!
//People do weird things when building pages!
var rel = link.getAttribute('rel');
if(rel) {
//I don't know why people don't use indexOf more often
//It is faster than regex for simple stuff like this
//Lowercase comparison for safety
if(rel.toLowerCase().indexOf('icon') > -1) {
var href = link.getAttribute('href');
//Make sure href is not null/undefined
if(href) {
//Relative
//Lowercase comparison in case some idiot decides to put the
//https or http in caps
//Also check for absolute url with no protocol
if(href.toLowerCase().indexOf('https:') == -1 && href.toLowerCase().indexOf('http:') == -1
&& href.indexOf('//') != 0) {
//This is of course assuming the script is executing in the browser
//Node.js is a different story! As I would be using cheerio.js for parsing the html instead of document.
//Also you would use the response.headers object for Node.js below.
var absoluteHref = window.location.protocol + '//' + window.location.host;
if(window.location.port) {
absoluteHref += ':' + window.location.port;
}
//We already have a forward slash
//On the front of the href
if(href.indexOf('/') == 0) {
absoluteHref += href;
}
//We don't have a forward slash
//It is really relative!
else {
var path = window.location.pathname.split('/');
path.pop();
var finalPath = path.join('/');
absoluteHref += finalPath + '/' + href;
}
icons.push(absoluteHref);
}
//Absolute url with no protocol
else if(href.indexOf('//') == 0) {
var absoluteUrl = window.location.protocol + href;
icons.push(absoluteUrl);
}
//Absolute
else {
icons.push(href);
}
}
}
}
}
return icons;
}
http://en.wikipedia.org/wiki/Favicon#Accessibility zawiera już wiele wskazówek. –
@xRobot: Jeśli chcesz, aby ludzie napisali kod dla ciebie, istnieje kilka stron, które mogą to zrobić. StackOverflow nie jest to miejsce. –