Clear dropdown using jQuery Select2
This works for me:
$remote.select2('data', {id: null, text: null})
It also works with jQuery validate when you clear it that way.
-- edit 2013-04-09
At the time of writing this response, it was the only way. With recent patches, a proper and better way is now available.
$remote.select2('data', null)
In case of Select2 Version 4+
it has changed syntax and you need to write like this:
// clear all option
$('#select_with_blank_data').html('').select2({data: [{id: '', text: ''}]});
// clear and add new option
$("#select_with_data").html('').select2({data: [
{id: '', text: ''},
{id: '1', text: 'Facebook'},
{id: '2', text: 'Youtube'},
{id: '3', text: 'Instagram'},
{id: '4', text: 'Pinterest'}]});
This is the proper one, select2 will clear the selected value and show the placeholder back .
$remote.select2('data', null)
For select2 version 4 easily use this:
$('#remote').empty();
After populating select element with ajax call, you may need this line of code in the success section to update the content:
success: function(data, textStatus, jqXHR){
$('#remote').change();
}
Using select2 version 4 you can use this short notation:
$('#remote').html('').select2({data: {id:null, text: null}});
This passes a json array with null id and text to the select2 on creation but first, with .html('')
empties the previously stored results.