Scrapes all the glyphicons classnames from http://glyphicons.bootstrapcheatsheets.com/

glyphicon-scraper.js

var spans = document.getElementsByTagName('SPAN');
var names = [];
for(var i = 0; i < spans.length; i++) {
    if(spans[i].className.indexOf('glyphicon') !== -1) {
        names.push(spans[i].className.split(' ').pop());
    }
}