How Do I Set a Default Value for a CKEditor Dialog Window Field?

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In order to assign a default value to a dialog window field, use the 'default' parameter in the dialog window UI element definition.

elements :
[
	{
		type : 'text',
		id : 'myCustomField',
		label : 'My Custom Field',
		'default' : 'Default Custom Field Value!'
	},
	{
		type : 'checkbox',
		id : 'myCheckbox',
		label : 'This checkbox is selected by default',
		'default' : true
	}
]

The code above creates the following UI elements in a sample dialog window tab.

Sample dialog window tab containing two field with default values


For more examples on setting a default field value refer to the Using the JavaScript API to customize dialog windows (api_dialog.html) sample and its source code from the _samples directory of your CKEditor installation.