If you're certain the token exists in either of the objects you can do:
First check for the existence of the value in data.
var value = data.d || data.value;
then access the value to get the token
var token = value && value.GetContextWebInformation.FormDigestValue;
var value = data.d || data.value;
var token = value && value.GetContextWebInformation.FormDigestValue;
if (token) {
this.options.token = token;
} Otherwise, you can use getIn function:
function getIn(pathArray, obj) {
var tmp = obj;
for (var i = 0; i < pathArray.length; i++) {
if (tmp.hasOwnProperty(pathArray[i])) {
tmp = tmp[pathArray[i]];
continue;
}
return undefined;
}
return tmp;
}
var token = getIn(['d', 'GetContextWebInformation', 'FormDigestValue'], data) ||
getIn(['value', 'GetContextWebInformation', 'FormDigestValue'], data);
if (token) {
this.options.token = token;
}