How set read-only element with js , depending of another element value

[kouros91]

Hi.
I would like to set or not set read-only property of an element in my form, depending of another element value.
I don't know how access to these property with js .
Thank you to help me
Nicolas

 

[cheesegrits]

It should be built in to the JS effects in the element settings.

-- hugh

 

[kouros91]

Ah ok . Thank you