When using a JSON object in a zul page through data binding, the JSON object is parsed with double quotes (") which render it incorrect.
step to reproduce :
load the attached example
observe the source of the div, find the testjson attribute
value is similar to :
<div id="XXXXXX" class="z-div" testjson="
"=""><span id="XXXXXX" class="z-label">check this div attributes</span></div>
Data-handlers still work, but the resulting HTML is incorrect.