Example custom template tag for jQuery Templates plugin ($.tmpl)

gistfile1.js

// Relevant jQuery Template source: 
//   https://github.com/jquery/jquery-tmpl/blob/master/jquery.tmpl.js#L206

// Example usage: {{pretty_datetime some.date.obj}}

$.extend(jQuery.tmpl.tag, {
    "pretty_datetime": {
        open: "if($notnull_1){_.push(pretty_datetime($1a));}"
    }
});

function pretty_datetime(date) {
   /* do something to date */
   return date;
}