Work with ComboBox

Setting/getting value(s)

In order to select options in ComboBox, use the setValue() method. It takes one parameter:

• value - (string|number|array) the ID(s) of Combo options from data collection that should be selected in ComboBox

// select one option
combo.setValue(combo.data.getId(1));
 
// selects several options at once
combo.setValue([combo.data.getId(1), combo.data.getId(3)]);

Related sample: Combobox. Set value

To get the list of selected options, apply the getValue() method. It returns IDs of selected options either as string(s) (by default) or as an array of strings. In the latter case you need to pass the following parameter:

• asArray - (boolean) true, to return ids as an array of strings

const id = combo.getValue();
// -> "u1556098582074"
 
// returns ids of selected options as strings
const ids = combo.getValue();
// -> "u1556097609214,u1556097609228,u1556097609244"
 
// returns ids of selected options as an array of strings
const array_ids = combo.getValue(true);
// -> ["u1556097609214", "u1556097609228", "u1556097609244"]

Related sample: Combobox. Get value

Disabling/enabling ComboBox

To disable/enable ComboBox, make use of the disable()/enable() methods:

// disabling a combo box
combo.disable();
// enabling a combo box
combo.enable();

Related sample: Combobox. Enable, disable, is disabled

Checking if a combobox is disabled

To check if a combobox is disabled, call the isDisabled() method:

combo.isDisabled(); // -> true/false

Related sample: Combobox. Enable, disable, is disabled

Repainting ComboBox

You can repaint ComboBox on a page, e.g. after changing its configuration, using the paint() method:

// disabling ComboBox via the configuration object
combo.config.disabled = true;
// repaints ComboBox with a new config
combo.paint();

Clearing input

It is possible to clear the ComboBox input from the selected value(s) with the help of the clear() method:

combo.clear();

Related sample: Combobox. Clear

Setting/removing focus

When needed, you can set focus in the ComboBox input without opening the list of options. Use the focus() method for this purpose:

combo.focus();

To remove focus from Combobox, apply the blur() method:

combo.blur();

Related sample: Combobox. Focus

Hiding/showing the popup

You can manipulate the visibility of the Combo popup with the help of the Popup API.

To hide/show the popup, use the corresponding methods:

show()	shows a popup in a Combo. Takes two parameters: container - (HTMLElement) mandatory, the container to place a popup in config - (object) optional, the configuration object of a popup
hide()	hides a popup

// showing a popup
combo.popup.show(container);

// hiding a popup
combo.popup.hide();

Related sample: Combobox. Show / hide options list

To control the process of showing/hiding the popup, apply the related events:

beforeShow	fires before a popup is shown. The handler function takes one parameter: container - (HTMLElement) a container a popup is placed into Return false to prevent showing of a popup
afterShow	fires after a popup is shown. The handler function takes one parameter: container - (HTMLElement) a container a popup is placed into
beforeHide	fires before a popup is hidden. The handler function takes two parameters: fromOuterClick - (boolean) true, for a click outside a popup, otherwise - false e - (Event) the native mouse event Return false to prevent hiding of a popup
afterHide	fires after a popup is hidden. The handler function takes one parameter: e - (Event) the native mouse event

combo.popup.events.on("BeforeShow", function(HTMLElement){
    console.log("A popup will be shown");
    return true;                
});

combo.popup.events.on("AfterShow", function(HTMLElement){
    console.log("A popup is shown");                
});

combo.popup.events.on("BeforeHide", function(fromOuterClick,e){
    console.log("A popup will be hidden");
    return true;                
});

combo.popup.events.on("AfterHide", function(e){
    console.log("A popup is hidden");            
});

Related sample: Combobox. Popup Events

Using Data Collection API

You can manipulate ComboBox options with the help of the Data Collection API.

Adding options into ComboBox

It is possible to add more options into the initialized ComboBox on the fly. Use the add() method of Data Collection. It takes two parameters:

config	(object) the configuration object of the added option
index	(number) optional, the position to add an option at

For instance:

combobox.data.add({value:"Russia"},1);

Related sample: Combobox. Add data and remove item

info

From v7.3, Combobox includes the addOption() method which you can also use for adding new options into the data collection.

Updating ComboBox options

You can change config options of the option via the update() method of Data Collection. It takes two parameters:

id	the id of the option
config	an object with new configuration of the option

For example, you can change the image of an option:

combo.data.update("option_id",{
    value:"Russia", src: "../common/flags/ru.png"
});

Related sample: Combobox. Update

Removing options from ComboBox

To remove an option, make use of the remove() method of Data Collection. Pass the id of the option that should be removed to the method:

combo.data.remove("option_id");

note

Check the full list of Data collection API