backbone like event map

plugins

$.fn.event_map = function(map){
    var el = this;
    $.each(map, function(k, v){
        var event = k.slice(0, k.indexOf(" ")),
        selector = k.slice(k.indexOf(" ") + 1, k.length);

        if(event && typeof v === "function"){
            if(k.indexOf(" ") != -1){
                el.on(event, selector, v);
            }
            else{
                el.on(k, v);
            }
        }
        else{
            throw "need a event and function";
        }
    });
};