// Go through the array, only saving the items
// that pass the validator function
for ( var i = 0, length = elems.length; i < length; i++ )
- if ( !inv && callback( elems[ i ], i ) || inv && !callback( elems[ i ], i ) )
+ if ( !inv != !callback( elems[ i ], i ) )
ret.push( elems[ i ] );
return ret;