webix UI library allows temporarily disabling functionality of some component. It remains visible yet becomes dim, and neither of it's elements works.
The functions to disable and enable components are as follows:
$$("cell").enable(); ... $$("cell").disable();
When can it be useful?
Or you want to temporarily disable a component until server operation is performed (e.g. data saving) in order that users can't click buttons and make selection.
To check whether the component is enabled or disabled now, use the appropriate method:
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$$('cell').isEnabled(); //returns boolean values