Can you provide examples of parsing HTML?

Question

How do you parse HTML with a variety of languages and parsing libraries?

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When answering:

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Answer 1

Language: JavaScript
Library: DOM

var links = document.links;
for(var i in links){
    var href = links[i].href;
    if(href != null) console.debug(href);
}

(using firebug console.debug for output...)