Question

I am trying to pass an object to a javascript function which should trigger when a link is clicked. But unfortunately I am not able to get it working.

Here is the code on my jsp file for the same:

<script type="text/javascript">
    $(document).ready(function() {
        function tryToDoItTwice(obj) {
            var check = obj;
            if(check == null) {
                return true;
            }
            else {
                alert("You're not allowed to do this twice!");
                return false;
            }
        }
    });
</script>

<a href="<c:url value="/somepath" />" onclick="javascript: tryToDoItTwice(${foo});">Try to do it twice</a>

Here foo refers to an object of type Foo.

Could someone help me understand what am I doing wrong here?

EDIT: Foo is a java object. and ${foo} is a reference variable referring to Foo java object.

Thanks.

Answer 1

You can’t pass a JAVA object directly to javascript. Either you need to return as JSON ( look up GSON or Jackson for converting object to JSON ) or pass variables( not object ) to the function.