JavaScript use Java variable: Uncaught SyntaxError: Unexpected identifier

Question

I had getted a Uncaught SyntaxError: Unexpected identifier error when I use Java variable value. The java code is :

    <%!String questionId = "";
  String currentUserId = "";%>
<%
    String id = request.getParameter("questionId");
    if (id != null) {
        questionId = request.getParameter("questionId");
    }
    LoginResult loginResult =     (LoginResult)request.getSession().getAttribute(I_SsoLogin.LOGINRESULT);
    currentUserId = loginResult.getUser().getUserId();

%>

But the variable using in JavaScript code:

function getAnswerAdoptView(item){

    var adoptHtml = "";
    var id = "adopt_"+item.answerid;
    var userId = <%=currentUserId%>;

}

in the browser show errors:Uncaught SyntaxError: Unexpected identifier

score 0 · Answer 1 · answered Apr 28 '17 at 06:48

0

JSTL is not available in JavaScript resources. If you want your variable to be accessible from JavaScript you will need to declare it in a script tag in you HTML like:

<script>var userId = <%=currentUserId%></script>

answered Apr 28 '17 at 06:48

kalsowerus

998
8
23

score -1 · Accepted Answer · answered Apr 28 '17 at 06:45

-1

Put it inside a string like this:

var userId = "<%=currentUserId%>";

answered Apr 28 '17 at 06:45

Kinshuk Lahiri

1,468
10
23

What if it is already a String ? – Suresh Atta Apr 28 '17 at 06:48
@ANS Clearly, javascript is not recognizing. Hence best would be to place it inside a string. – Kinshuk Lahiri Apr 28 '17 at 06:50
@KinshukLahiri That would fix the error but probably not achieve the desired result. – kalsowerus Apr 28 '17 at 06:52

JavaScript use Java variable: Uncaught SyntaxError: Unexpected identifier

2 Answers2