Hi Peter,
Thank you for this quick answer.
My question was perhaps not very clear.
I have one jqxInput that have the focus while the user is typing some text inside it.
Just under it I have a jqxButton that is disabled by default.
I would like that as soon as the user types the first letter in the jqxInput, then the jqxButton becomes enabled.
So I set its ‘disabled’ property to false (on the jqxInput ‘change’ event), but nothing changes on the screen : the button remains visually disabled.
Sorry if I misunderstood your answer.