How to slide div content left right..?

I am developing a wordpress plugin, where I have to move content in slider from left to right and right to left.
I just tried as:

 var effect = 'slide';
   // Set the options for the effect type chosen
   var options = { direction: 'right' };
   // Set the duration (default: 400 milliseconds)
   var duration = 700;
jQuery("#letsee").html(data).hide().toggle(effect, options, duration);

see the reference jsfiddle

So what should I do to make it run. I am appling this for response of ajax.

Problem: There is no effect like jsfiddle example, and content is just coming without any effect.
So how can I make the slide left to right, right to left…
Thanks in advance