Grab Text-Node after find()-usage

I am using JQuery to show a tooltip-Box after clicking an image. So far, I can select the correct div(s) and then I can identify the correct sub-div which contains the text-node as well. Unfortunately I am not able to get the text node of the sub-div. What is wrong - I am getting 'null' after calling html() on currentDescriptionContainer? Thanks in advance!

var tooltipItems = jQuery('.tooltipContainer').length;
 var i=0;
 for (i=0; i<tooltipItems; i++){
     jQuery('.tooltipContainer').eq(i).bind('click', function(){
     var currentContainer = jQuery('.tooltipContainer').eq(i);
     var currentDescriptionContainer = currentContainer.find('div');
     var currentDescriptionText = currentDescriptionContainer.html();
     console.log(currentDescriptionText);
     showRendererToolTipForIpad(this, currentDescriptionText);
     hideRenderedToolTipAfterTimeout();
     });
 }
 

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