CasperJS script to extract meta informations

meta-extract.js

var casper = require("casper").create()
  , url = casper.cli.get(0)
  , metas = [];

if (!url) {
    casper.echo('Usage: casperjs [url]').exit();
}

casper.on('remote.message', function(msg) {
    console.log(msg);
});

casper.start(url, function() {
    metas = this.evaluate(function() {
        var metas = [];
        [].forEach.call(document.querySelectorAll('meta'), function(elem) {
            var meta = {};
            [].slice.call(elem.attributes).forEach(function(attr) {
                meta[attr.name] = attr.value;
            });
            metas.push(meta);
        });
        return metas;
    });
});

casper.run(function() {
    require("utils").dump(metas);
    this.exit();
});

Sample output:

$ casperjs samples/metaextract.js http://akei.com
[
    {
        "content": "text/html; charset=utf-8",
        "http-equiv": "Content-Type"
    },
    {
        "content": "index, follow",
        "name": "robots"
    },
    {
        "content": "-CBaKTlXHwyFTqJRYEur9pB9OEkG7BXsHO0SNDN1Cg0",
        "name": "google-site-verification"
    },
    {
        "content": "akei, informatique, internet, conseil, audit, expertise, web, formation, développement, lamp, mysql, php, symfony, python, django, framework, agile, scrup, xp",
        "name": "keywords"
    },
    {
        "content": "Akei accompagne vos projets Web au travers son offre de conseil, de formation et de développement.",
        "name": "description"
    }
]