ajQuery.extend({

merge:function(first,second){

var len = +second.length,

????????????j = 0,

????????????i = first.length;

???????? ? ?for ( ; j < len; j++ ) {

????????????first[ i++ ] = second[ j ];

???????? ? ?}

???????? ? ?first.length = i;

???????? ? ?return first;

},

b:function(){

alert('111');

}

})

$.merge is not a function