layer实现鼠标悬浮效果

    var tip_index = ;
    $(document).on('mouseenter', '.layer_hover', function(){
        var words = $(this).data('words');
        tip_index = layer.tips(words, '.layer_hover', {time: });
    }).on('mouseleave', '.layer_hover', function(){
        layer.close(tip_index);
    });