Escape JavaScript quotes in EL in a JSF component attribute

Question

I have an onclick event that depends on the state of a variable. So I need to do something like

onclick=\"#{object.isEnabled ? \'ch.my.js_method(\'#{object.p         


        

Answer 1

You can escape them with \ or \\, but rules differ per EL implementation, because it isn't clear cut in EL spec (Oracle's EL impl needs single backslash, but Apache needs double backslash). And you need the += operator to string-concatenate the EL expression.

Safest bet is to just create an alias with help of .

E.g.

You've only still a potential problem if #{object.property} can contain JS-special characters which can in turn cause invalid JS output, such as single quotes or newlines. Head to the second link below for the solution to that.

See also:

• How to concatenate Strings in EL expression?
• How do I pass JSF managed bean properties to a JavaScript function?