Question

I am using EL expressions in my javascript code as shown below:

cur_step = #{obj1.step};

This works fine when there actually is a value inside obj1.step. However, if there is no value or is null, this is how the javascript is rendered in the browser:

cur_step = ;

This results in javascript error preventing my javascript from executing at all.

How do I fix this problem?

The obj1 object is a java bean populated on the server. FYI, I use JSF2.1 with jboss-el-2.0.jar as my EL implementation.

Answer 1

You could do a null check in your expression:

#{empty obj1.step ? 'something else' : obj1.step}

The empty keyword covers null and empty strings.