Backwards compat for versions of jQuery prior to 1.6 that want to use objects in jQuery.map

map_obj_support.js

// Only load this in if the version of jQuery is prior to 1.6
if(parseFloat(jQuery.fn.jquery) < 1.6){
    
    jQuery.map = (function(_oldmap){
        
        return function(){
            
            var elems = arguments[0],
                length = elems.length,
                isArray = elems instanceof jQuery || length !== undefined && typeof length === "number" && ((length > 0 && elems[0] && elems[length -1]) || jQuery.isArray(elems));

            if(!isArray){
                var ret = [];
                for ( key in elems ) {
                    value = arguments[1](elems[key], key, arguments[2]);
                    if (value != null) {
                        ret[ret.length] = value;
                    }
                }
                return ret;
            }

            return _oldmap.apply(this, arguments);
            
        }
        
    })(jQuery.map);
    
}

// Compressed
/*
parseFloat(jQuery.fn.jquery)<1.6&&(jQuery.map=function(a){return function(){var b=arguments[0],c=b.length,d=b instanceof jQuery||c!==undefined&&typeof c=="number"&&(c>0&&b[0]&&b[c-1]||jQuery.isArray(b));if(!d){var e=[];for(key in b)value=arguments[1](b[key],key,arguments[2]),value!=null&&(e[e.length]=value);return e}return a.apply(this,arguments)}}(jQuery.map))
*/

$.map({ 1: 'hi', 'bob': 'joe' }, function(val, key){
    console.log(arguments);
});