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beforeShow

fires before a Button control is shown

beforeShow: (text: string) => boolean | void;

Parameters:

  • text: string - the current text label of the control

Returns:

Return false to prevent a control from being shown; otherwise - true.

Example

form.getItem("button").events.on("beforeShow", function(text) {
    console.log("beforeShow", text);
    return true;
});

Change log:

added in v7.0