Bootstrap Multiselect update option list on flow

Answer 1

I think this is an easier way to add options on the fly (using ajax or any other listener) to an existing Bootstrap MultiSelect.

Following is a simplified example to add options:

function addOptionToMultiSelect(multiselectSelector, value, selected) {
    var data = [];
    $(multiselectSelector + ' option').each(function(){
        var value = $(this)[0].value;
        var selected = $(this)[0].selected;
        data.push({label: value, value: value, selected: selected});
    });

    // Add the new item
    data.push({label: value, value: value, selected: selected});

    $(multiselectSelector).multiselect('dataprovider', data);
}

For simplicity, I have assumed both the label and value are the same in an option. Note that the already selected options are taken care of by reading the selected attribute from the existing options. You can make it more sophisticated by tracking the disabled and other attributes.

Sample:

addOptionToMultiSelect('#multiselect-example', 'new-option', true);