passing value to JavaScript from JSP

Question

<%   if(empRecNum != null && !(empRecNum.equals("")))
        {
           empSelected=true;
        }
        boolean canModify = UTIL.hasSecurity("PFTMODFY") && empSelected;
%>

<script type="text/javascript">

    function add(){
        alert(canModify);
        df('ADD');
    }

</script>

I need to alert the canModify in my JavaScript

Answer 1

Do some thing like.

function add(){
        alert(<%=canModify%>);
        df('ADD');
    }

Answer 2

I know I use something like this:

<%
String s = "BOB";
%>
<script>
alert('<%= s %>');
</script>

The '<%= %>' tag lets you put in the value of the java variable.

Answer 3

Get away from using scriptlets, use jstl and expression language and it would look like this:

alert( ${UTIL.hasSecurity("PFTMODFY") 
         && empRecNum != null 
         && !(empRecNum.equals("")
        }
      );