How do I clear the dropdownlist values on button click event using jQuery?

Question

How do I clear the dropdownlist values on button click event using jQuery?

Martinamartindale

Do you want to reset them to the default (top) value? – Aviate

Answer 1

A shorter alternative to the first solution given by Russ Cam would be:

$('#mySelect').val('');

This assumes you want to retain the list, but make it so that no option is selected.

If you wish to select a particular default value, just pass that value instead of an empty string.

$('#mySelect').val('someDefaultValue');

or to do it by the index of the option, you could do:

$('#mySelect option:eq(0)').attr('selected','selected'); // Select first option

Mazur

this is not correct. he wants to clear all options. val(''); doesnt do that, it simpyl clears the selection. you should use .empty() instead – Posticous

Answer 2

$('#dropdownid').empty();

That will remove all <option> elements underneath the dropdown element.

If you want to unselect selected items, go with the code from Russ.

Denoting

How can i get all the options back after setting the dropdown to empty, note that the dropdown is being populated from database? – Aigrette

@Piyush: If you want to restore the exact same option, you can just cache those. Like, var $opts = $('select option').detach(); and then you can re-insert those later with $opts.appendTo('#selectID'); – Denoting

I get how that clears it, but in my case the selection options were populated from a database based on selection of another dropdown. So, how do I put the default text there, since the default text was there from pre-ajaxing so to speak so the source shows it but the ajax doesnt. Just putting $('#blarg').val('Default Text'); didnt work for me. – Duester

Answer 3

If you want to reset the selected options

$('select option:selected').removeAttr('selected');

If you actually want to remove the options (although I don't think you mean this).

$('select').empty();

Substitute select for the most appropriate selector in your case (this may be by id or by CSS class). Using as is will reset all <select> elements on the page

Aviate

only this one works for me, the other answer above does NOT works. – Portion

Answer 4

If you want to reset bootstrap page with button click using jQuery :

function resetForm(){
        var validator = $( "#form_ID" ).validate();
        validator.resetForm();
}

Using above code you also have change the field colour as red to normal.

If you want to reset only fielded value then :

$("#form_ID")[0].reset();

Height

Answer 5

If all the other codes do not work, try $("#element_id").selectpicker('val', '');

Lamas