1 function toggleInterest(issueId) {

2 var linkEl = document.getElementById("issue_" + issueId + "_interest_link");

3 var iconEl = document.getElementById("issue_" + issueId + "_interest_icon");

4 var interested = iconEl.innerHTML == "star_outline";

5

6 if (interested) {

7 linkEl.classList.add("mdl-button--accent");

8 linkEl.classList.add("mdl-button--feature-on");

9 linkEl.classList.remove("mdl-button--feature-off");

10 iconEl.innerHTML = "star";

11 } else {

12 linkEl.classList.remove("mdl-button--accent");

13 linkEl.classList.remove("mdl-button--feature-on");

14 linkEl.classList.add("mdl-button--feature-off");

15 iconEl.innerHTML = "star_outline";

16 }

17

18 var data = new FormData();

19 data.append("issue_id", issueId);

20 data.append("interested", interested);

21

22 fetch("/lf/interest/xhr_update", {

23 method : "POST",

24 body: data

25 }).then(

26 response => {

27 if (response.status != 200) {

28 window.alert("Error during update");

29 }

30 }

31 );

32

33 }

34