This is a rewrite of https://github.com/Honatas/bootstrap-4-autocomplete for bootstrap v5.

const ac = new Autocomplete(field, {
    data: [{label: "I'm a label", value: 42}],
    maximumItems: 5,
    onSelectItem: ({label, value}) => {
        console.log("user selected:", label, value);
    }
});

// later, when you need to change the dataset

ac.setData([
    {label: 'New York JFK', value: 'JFK'},
    {label: 'Moscow SVO', value: 'SVO'},
]);

Options is a JSON object with the following attributes (in alphabetical order):

data:
The data from where autocomplete will lookup items to show. This data has to be an array of JSON objects. The format for every item in the array is:

{"label": "This is a text", "value": 42}

dropdownOptions:
It's the same options from Bootstrap's Dropdown, documented here.

dropdownClass:
The class of the dropdown-menu element, which is the box that is displayed. Can take a string or an array of strings.

highlightClass:
The class to use when highlighting typed text on items. Only used when highlightTyped is true. Default is text-primary. Can take a string or an array of strings.

highlightTyped:
Wether to highlight (style) typed text on items. Default is true.

maximumItems:
How many items you want to show when the autocomplete is displayed. Default is 5. Set to 0 to display all available items.

onInput

onSelectItem:
A callback that is fired every time an item is selected. It receives an object in following format:

{label: <label>, value: <value>}

treshold:
The number of characters that need to be typed on the input in order to trigger the autocomplete. Default is 4.

MIT