+/**
+ * The URLs of not-loaded elements are part of the GET request’s URL. As
+ * both browsers and HTTP servers do have differing limits on URL length
+ * (the HTTP 1.1 RFC states 8000 bytes but most browsers only support up
+ * to 2000 bytes) we will return a random selection of not-loaded URLs we
+ * want to refresh the status from up until we are at approximately 1000
+ * bytes (as the rest of the URL also needs some space).
+ *
+ * @return An array of not-loaded element URLs that will have a total length
+ * of 1000 bytes or fewer
+ */
+function getRandomSelectionOfElementsToUpdate() {
+ const notLoadedElementUrls = $(".linked-element.not-loaded").map(function(_, element) {
+ return $(element).prop("title");
+ }).toArray();
+ shuffleArray(notLoadedElementUrls);
+ const selectedElementUrls = Array();
+ let currentCombinedStringLength = 0;
+ $(notLoadedElementUrls).each(function(_, elementUrl) {
+ if ((currentCombinedStringLength + elementUrl.length) <= 1000) {
+ selectedElementUrls.push(elementUrl);
+ currentCombinedStringLength += elementUrl.length;
+ }
+ });
+ return selectedElementUrls;
+}
+
+// shamelessly stolen from https://stackoverflow.com/a/12646864/43582
+function shuffleArray(array) {
+ for (let i = array.length - 1; i > 0; i--) {
+ const j = Math.floor(Math.random() * (i + 1));
+ const temp = array[i];
+ array[i] = array[j];
+ array[j] = temp;
+ }
+}
+