How to Know Available Data from my website for my Google Custom Search - google-custom-search

Question

I'm trying to implement a Google Custom Search Engine into my website. So far, I've been able of changing my snippets layout, and show the variables Google shows in its examples:
http://googleajaxsearchapi.blogspot.com.es/2010/04/rendering-custom-data-in-custom-search.html
Well, in the examples, everything looks great, BECAUSE THEY KNOW THE VALUES THEY MAY PRINT. I mean, if you see this snippet:
<div id="mysite_thumbnail">
<div data-if="Vars.thumbnail" class="gs-image-box gs-web-image-box">
<a class="gs-image" data-attr="{href:url, target:target}">
<img class="gs-image" data-attr="{src:thumbnail.src, width:48, height: 48}"/>
</a>
</div>
</div>
it's pretty clear that "Vars" is holding some data GSE is printing. My problem is that I don't know what "Vars" holds, and when developing my view I can't know if the value is there, and what is its name.
So, the question is: How can I print "Vars"? I suppose is a js variable you may obtain from the jsapi, but juss guessing, console.log() was not working for me, :(

Answer 1

Well, I finally found out how to post the data:
From Google Search Engine Api documentation:
https://developers.google.com/custom-search/docs/js/rendering?hl=es&csw=1#richsnip
You only have to add the following code in your snippet:
<span data-body="JSON.stringify(Vars)"></span>
So, you'll have something like:
<script src="http://www.google.com/jsapi" type="text/javascript"></script>
<script type="text/javascript">
// Load the Search API
google.load('search', '1');
// Set a callback to load the Custom Search Control when you page loads
google.setOnLoadCallback(
function(){
new google.search.CustomSearchControl('XXXXXXXXXXXXXXX').draw('cse');
google.search.Csedr.addOverride("mysite_");
},
true);
console.log(google);
</script>
<div style="display:none">
<div id="mysite_thumbnail">
//This will show all Vars content
<span data-body="JSON.stringify(Vars)"></span>
<div data-if="Vars.thumbnail" class="gs-image-box gs-web-image-box">
<a class="gs-image" data-attr="{href:url, target:target}">
<img class="gs-image" data-attr="{src:thumbnail.src, width:48, height: 48}"/>
</a>
</div>
<div data-ifel="Vars.thumbnail == 0" class="gs-image-box gs-web-image-box">
<a class="gs-image" data-attr="{href:url, target:target}">
<img class="gs-image" data-attr="{src:'XXXXX.png', width:115, height: 90}"/>
</a>
</div>
</div>
<div id="mysite_webResult">
<div class="gs-webResult gs-result"
data-vars="{longUrl:function() {
var i = unescapedUrl.indexOf(visibleUrl);
return i < 1 ? visibleUrl : unescapedUrl.substring(i);}}">
<table>
<tr>
<td valign="top">
<div data-if="Vars.richSnippet" data-attr="0"
data-body="render('thumbnail',richSnippet,{url:unescapedUrl,target:target})"></div>
</td>
<td valign="top">
<div class="gs-title">
<a class="gs-title" data-attr="{href:unescapedUrl,target:target}"
data-body="html(title)"></a>
</div>
<div class="gs-snippet" data-body="html(content)"></div>
</td>
</tr>
</table>
</div>
</div>
</div>