Following JavaScript shows how to retrieve record(s) from Dynamics Crm using FetchXml and Web Api.

function RetrieveUsingFetch() {

var date = new Date();

var today = date.DateFormat("yyyy-MM-dd"); \\ Click here to see function details.

var marketCondition = "";

var fetchXml = "" +

"" +

"" +

"" +

"" +

"" +

"" +

"2" +

"1" +

"" +

"" +

"" +

"" +

"" +

"" +

" " +

"" +

"" +

"" +

"" +

"" +

"";

var uri = "/contractdetails?fetchXml=" + encodeURIComponent(fetchXml);

var clientUrl = Xrm.Page.context.getClientUrl();

var webApiPath = "/api/data/v8.1";

uri = clientUrl + webApiPath + uri;

var request = new XMLHttpRequest();

request.open("GET", encodeURI(uri), false);

request.setRequestHeader("Accept", "application/json");

request.setRequestHeader("Content-Type", "application/json; charset=utf-8");

request.setRequestHeader("OData-MaxVersion", "4.0");

request.setRequestHeader("OData-Version", "4.0");

request.setRequestHeader("Prefer", "odata.include-annotations=\"OData.Community.Display.V1.FormattedValue\"");

request.setRequestHeader("Prefer", "odata.maxpagesize=10");

request.onreadystatechange = function () {

if (request.readyState === 4 /* complete */) {

if (request.status === 200) {

request.onreadystatechange = null; 

var data = JSON.parse(request.response);

if (data.value.length === 1 || data.value.length > 1) {

alert(data.value[0].contractdetailid);

}

} else {

var error = JSON.parse(request.response).error;

alert(error.message);

}

}

};

request.send();

}

Note: Make sure that you have right version or WebApi version in your code.

Happy Coding

P. S. Hayer
(ਪ੍ਰੇਮਜੀਤ ਸਿੰਘ ਹੇਰ)