Set the name of the button. The name of the button must be unique and must be set as required.
It is used when registering buttons in options such as'editor.toolbar' and'editor.balloon'.

{
	name: 'buttonName'
}

The label of the button. Shown as a tool tip.

{
	label: 'button label'
}

The type of button.
You can specify the type of button by setting'button' or'dropdown'. (Default:'button')

{
	type: 'button'
}
// 또는
{
	type: 'dropdown'
}

The SVG tag or IMG tag for the icon to be shown on the button.

{
	iconSVG: '<svg xmlns="http://www.w3.org/2000/svg" version="1.1" viewBox="0 0 16 16">....</svg>'
}
// 또는
{
	iconSVG: '<img src="data:image/png;base64,......">'
}

The name of the icon to be displayed on the button.
If the iconSVG option is not set, the icon of the button is set to the icon with the same name as iconName among the icons registered in the editor.

{
	iconName: 'bold'
}

The action to perform when you click the button.

{
	onClickFunc: function (event) {
		// Action to be performed
	}
}

The action to perform when you click the drop-down; if the drop-down is a split button (isSingle: verse) it will operate when you click the first button.

{
	onClickFunc: function (event) {
		// Action to be performed
	}
}

isSingle: true	isSingle: false

Set whether to use the dropdown as a single button or a split button. (Default: true)

{
	isSingle: true
}

isSingle: true	isSingle: false

Whether to use the dropdown as an icon button or a text button. (Default: false)

{
	useIcon: false
}

useIcon: true	useIcon: false

Sets the list of items in the drop-down.

{
	dropdownItems: [
		{ label: 'Item1' },
		{ label: 'Item2' },
		{ label: 'Item3' }
	]
}

The drop-down item label.

{
	dropdownItems: [
		{
			label: 'Item'
		}
	]
}

The action to perform when you click a drop-down item.

{
	dropdownItems: [
		{
			label: 'Item',
			onClickFunc: function () {
				// Action to be performed
			}
		}
	]
}

The CSS text to render the dropdown item.

{
	dropdownItems: [
		{
			label: 'Item1',
			cssText: 'font-size: 20px; color: orange;'
		},
		{
			label: 'Item2',
			cssText: 'font-size: 15px; color: red;'
		}
	]
}