beforeShow
fires before a Container control is shown
beforeShow: (value: undefined) => boolean | void;
Parameters:
value: undefined
- the current value of the control, null
Returns:
Return false
to prevent a control from being shown; otherwise, true
.
Example
form.getItem("container").events.on("beforeShow", function(text) {
console.log("beforeShow", text);
return true;
});
Change log:
added in v7.2