Check which versions of jQuery are working on Google Sites.

googleSitesJqueryCheck.html

<div id="jquery_check">Versions of jQuery that are working in Google Sites HTML Box as of </div>

<script>
  var div = document.getElementById('jquery_check');
  div.innerHTML = div.innerHTML + new Date;
</script>

<script src='http://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js'></script>
<script>
var div = document.getElementById('jquery_check');
var jq211 = jQuery.noConflict();
div.innerHTML = div.innerHTML + "<br/>" + jq211.fn.jquery;
</script>

<script src='http://ajax.googleapis.com/ajax/libs/jquery/2.1.0/jquery.min.js'></script>
<script>
var div = document.getElementById('jquery_check');
var jq210 = jQuery.noConflict();
div.innerHTML = div.innerHTML + "<br/>" + jq210.fn.jquery;
</script>

<script src='http://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js'></script>
<script>
var div = document.getElementById('jquery_check');
var jq203 = jQuery.noConflict();
div.innerHTML = div.innerHTML + "<br/>" + jq203.fn.jquery;
</script>

<script src='http://ajax.googleapis.com/ajax/libs/jquery/2.0.2/jquery.min.js'></script>
<script>
var div = document.getElementById('jquery_check');
var jq202 = jQuery.noConflict();
div.innerHTML = div.innerHTML + "<br/>" + jq202.fn.jquery;
</script>

<script src='http://ajax.googleapis.com/ajax/libs/jquery/2.0.1/jquery.min.js'></script>
<script>
var div = document.getElementById('jquery_check');
var jq201 = jQuery.noConflict();
div.innerHTML = div.innerHTML + "<br/>" + jq201.fn.jquery;
</script>

<script src='http://ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js'></script>
<script>
var div = document.getElementById('jquery_check');
var jq200 = jQuery.noConflict();
div.innerHTML = div.innerHTML + "<br/>" + jq200.fn.jquery;
</script>

<script src='http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js'></script>
<script>
var div = document.getElementById('jquery_check');
var jq1111 = jQuery.noConflict();
div.innerHTML = div.innerHTML + "<br/>" + jq1111.fn.jquery;
</script>

<script src='http://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js'></script>
<script>
var div = document.getElementById('jquery_check');
var jq1110 = jQuery.noConflict();
div.innerHTML = div.innerHTML + "<br/>" + jq1110.fn.jquery;
</script>

<script src='http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js'></script>
<script>
var div = document.getElementById('jquery_check');
var jq1102 = jQuery.noConflict();
div.innerHTML = div.innerHTML + "<br/>" + jq1102.fn.jquery;
</script>

<script src='http://ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js'></script>
<script>
var div = document.getElementById('jquery_check');
var jq1101 = jQuery.noConflict();
div.innerHTML = div.innerHTML + "<br/>" + jq1101.fn.jquery;
</script>

<script src='http://ajax.googleapis.com/ajax/libs/jquery/1.10.0/jquery.min.js'></script>
<script>
var div = document.getElementById('jquery_check');
var jq1100 = jQuery.noConflict();
div.innerHTML = div.innerHTML + "<br/>" + jq1100.fn.jquery;
</script>

<script src='http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js'></script>
<script>
var div = document.getElementById('jquery_check');
var jq191 = jQuery.noConflict();
div.innerHTML = div.innerHTML + "<br/>" + jq191.fn.jquery;
</script>

<script src='http://ajax.googleapis.com/ajax/libs/jquery/1.9.0/jquery.min.js'></script>
<script>
var div = document.getElementById('jquery_check');
var jq190 = jQuery.noConflict();
div.innerHTML = div.innerHTML + "<br/>" + jq190.fn.jquery;
</script>

<script src='http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js'></script>
<script>
var div = document.getElementById('jquery_check');
var jq183 = jQuery.noConflict();
div.innerHTML = div.innerHTML + "<br/>" + jq183.fn.jquery;
</script>

<script src='http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js'></script>
<script>
var div = document.getElementById('jquery_check');
var jq182 = jQuery.noConflict();
div.innerHTML = div.innerHTML + "<br/>" + jq182.fn.jquery;
</script>

<script src='http://ajax.googleapis.com/ajax/libs/jquery/1.8.1/jquery.min.js'></script>
<script>
var div = document.getElementById('jquery_check');
var jq181 = jQuery.noConflict();
div.innerHTML = div.innerHTML + "<br/>" + jq181.fn.jquery;
</script>

<script src='http://ajax.googleapis.com/ajax/libs/jquery/1.8.0/jquery.min.js'></script>
<script>
var div = document.getElementById('jquery_check');
var jq180 = jQuery.noConflict();
div.innerHTML = div.innerHTML + "<br/>" + jq180.fn.jquery;
</script>

<script src='http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js'></script>
<script>
var div = document.getElementById('jquery_check');
var jq172 = jQuery.noConflict();
div.innerHTML = div.innerHTML + "<br/>" + jq172.fn.jquery;
</script>

<script src='http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js'></script>
<script>
var div = document.getElementById('jquery_check');
var jq171 = jQuery.noConflict();
div.innerHTML = div.innerHTML + "<br/>" + jq171.fn.jquery;
</script>

<script src='http://ajax.googleapis.com/ajax/libs/jquery/1.7.0/jquery.min.js'></script>
<script>
var div = document.getElementById('jquery_check');
var jq170 = jQuery.noConflict();
div.innerHTML = div.innerHTML + "<br/>" + jq170.fn.jquery;
</script>

<script src='http://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js'></script>
<script>
var div = document.getElementById('jquery_check');
var jq164 = jQuery.noConflict();
div.innerHTML = div.innerHTML + "<br/>" + jq164.fn.jquery;
</script>

<script src='http://ajax.googleapis.com/ajax/libs/jquery/1.6.3/jquery.min.js'></script>
<script>
var div = document.getElementById('jquery_check');
var jq163 = jQuery.noConflict();
div.innerHTML = div.innerHTML + "<br/>" + jq163.fn.jquery;
</script>

<script src='http://ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js'></script>
<script>
var div = document.getElementById('jquery_check');
var jq162 = jQuery.noConflict();
div.innerHTML = div.innerHTML + "<br/>" + jq162.fn.jquery;
</script>

<script src='http://ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.min.js'></script>
<script>
var div = document.getElementById('jquery_check');
var jq161 = jQuery.noConflict();
div.innerHTML = div.innerHTML + "<br/>" + jq161.fn.jquery;
</script>

<script src='http://ajax.googleapis.com/ajax/libs/jquery/1.6.0/jquery.min.js'></script>
<script>
var div = document.getElementById('jquery_check');
var jq160 = jQuery.noConflict();
div.innerHTML = div.innerHTML + "<br/>" + jq160.fn.jquery;
</script>