I was trying to read the pageproperties using ajax query to pagepath/jcr:content.json this was sending request in the above format.
I changed the ajax query to point to servelt and send it back to ajax request and solved the issue
Component dialog details of the field
<Date
jcr:primaryType="nt:unstructured"
granite:class=".cq-dialog-field-filldata-parentnode-data"
sling:resourceType="granite/ui/components/coral/foundation/form/datepicker"
granite:id="datecompId"
displayedFormat="MMMM DD, YYYY hh:mm a"
displayTimezoneMessage="{Boolean}true"
type="datetime"
fieldLabel="Date"
name="../../releaseDate">
</Date>
Step2:-
I created a ajax request based on
Send a Ajax request to servlet
var requestPathWithHtml = $(".foundation-content-path").data("foundationContentPath");
var requestPath=requestPathWithHtml.replace(/\.[^/.]+$/, "");
$.ajax({
type: "GET",
url: "/bin/requreidserveltpath",
data:{"pagepath":requestPath},
contentType: "application/json"
}).success(function (res) {
$("#datecompId").val(res["pressReleaseDate"]);
}