gistfile1.js

var compile = require('/klout/amphetamine/client/js/external/handlebars.js').compile ;
var puts = require('sys').puts ;

var source = "<ol>{{#tabs}}<li>{{>a}}</li>{{/tabs}}</ol>";

var a = compile("<a href='{{href}}' {{#map data}}data-{{k}}='{{v}}'{{^last}} {{/last}}{{/map}}>{{content}}</a>") ;

var helpers = {

    map: function(object, fn) {
        var rv = '' ;

        // enumerate keys so that we can tell first and last
        var keys = [] ;
        for (k in object) keys[keys.length] = k ;

        // invoke the block with each key/value pair (and first/last)
        for (var i = 0 ; i < keys.length ; i++) {
            rv += fn({
                k: k,
                v: object[keys[i]],
                first: 0 == i,
                last: (keys.length - 1 == i)
            }) ;
        }

        return rv ;
    },

    partials: {
        a: a
    }
} ;

var template = compile(source);

var data = {
    tabs: [
        {
            content: 'tab1',
            href: '/1',
            data: {
                foo: 1,
                bar: 2
            }
        },
        {
            content: 'tab2',
            href: '/2',
            data: {
                foo: 1,
                bar: 2,
                baz: 3
            }
        },
    ]
};

var html = template(data, helpers);
puts(html) ;