Javascript and scriptlet : can it be done?

Question

Possible Duplicate:
How to use scriptlet inside javascript

<%
if(request.getAttribute("exception")!=null){%>

<script type="text/javascript" >
    alert("hi");

    parent.error.document.open();
    parent.error.document.write("bye");
    parent.error.document.write(<%=request.getAttribute("exception").toString()%>);
    parent.error.document.close();

</script>
</form>




<%}%>

Is it possible to have this sort of code? Is there any alternative?

It is possible if you use some [Tag Library](http://java.sun.com/products/jsp/tutorial/TagLibrariesTOC.html) instedd of scriptlets. — Paul Vargas, May 07 '12 at 17:54
It is possible that you can define the java script in the scriplet condition. — Bhavik Ambani, May 07 '12 at 17:59

score 0 · Answer 1 · answered May 07 '12 at 18:03

0

You're just missing some quotes to treat the value as a string, instead of a variable.

parent.error.document.write("<%=request.getAttribute("exception").toString()%>");

When printed to the page, it will appear as follows:

parent.error.document.write("myException");

answered May 07 '12 at 18:03

Beau Grantham

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even i am not getting the alert box displayed. – abson May 07 '12 at 19:02
@abson then your `if` statement is failing... what you have is valid code, except for the quotes noted in the answer above. – Beau Grantham May 07 '12 at 19:21
it is going inside the if block but not printing or displaying the alert box – abson May 07 '12 at 19:24

score 0 · Answer 2 · answered May 08 '12 at 07:20

Your code should work. But I prefer JSTL:

<c:if test="${not empty(exception)}">
    <script type="text/javascript">
        alert("hi");
        parent.error.document.open();
        parent.error.document.write("bye");
        parent.error.document.write(<%=request.getAttribute("exception").toString()%>);
        parent.error.document.close();

    </script>
</c:if>

Look more natural for jsp.

Javascript and scriptlet : can it be done?

2 Answers2