I want to pre-select multiple values from the below dropdown select. For this example i want to select 'Abbey' & 'Belgrave'

<select id="dropdown" multiple>
    <option value='Belgrave'>Belgrave</option>
    <option value='Abbey'>Abbey</option>
    <option value='Castle'>Castle</option>
</select> 

I can achieve this manually which works fine like this:

$('#dropdown').selectpicker('val', ['Abbey', 'Belgrave']);

The problem is by passing the array in string it does not work:

var wards = dsFilterOptions.Wards.split(",");
var strWard = "[";
for (i = 0; i < wards.length; i++) {
    strWard += "'" + wards[i] + "',";
}
strWard = strWard.slice(0, -1); //remove last ma
strWard += "]";
$('#dropdown').selectpicker('val', strWard);

The above does not select the Abbey & Belgrave values.What i can do.

I want to pre-select multiple values from the below dropdown select. For this example i want to select 'Abbey' & 'Belgrave'

<select id="dropdown" multiple>
    <option value='Belgrave'>Belgrave</option>
    <option value='Abbey'>Abbey</option>
    <option value='Castle'>Castle</option>
</select> 

I can achieve this manually which works fine like this:

$('#dropdown').selectpicker('val', ['Abbey', 'Belgrave']);

The problem is by passing the array in string it does not work:

var wards = dsFilterOptions.Wards.split(",");
var strWard = "[";
for (i = 0; i < wards.length; i++) {
    strWard += "'" + wards[i] + "',";
}
strWard = strWard.slice(0, -1); //remove last ma
strWard += "]";
$('#dropdown').selectpicker('val', strWard);

The above does not select the Abbey & Belgrave values.What i can do.

• javascript
• jquery
• twitter-bootstrap
• bootstrap-select

• Since you're trying to set 2 values, I presume it is a multiselect. You should add multiple to the <select> – Stryner Commented Aug 26, 2014 at 16:35
• Ninsly I already have multiple in the select :- updated above – user2906420 Commented Aug 26, 2014 at 16:41
• Oh ok. Is there any problem with just doing $('#dropdown').selectpicker('val', wards); – Stryner Commented Aug 26, 2014 at 16:47
• What is the initial string you're working with? And why, after splitting it into an array, are you converting it back into a string? – David Thomas Commented Aug 26, 2014 at 16:51
• David the initial str is built from the user input and does not have the 'apostrophe' around the value hence i am going through the str and formatting it with ' ' . And directly using it does not work also. – user2906420 Commented Aug 26, 2014 at 16:57

2 Answers 2

You could use JSON.parse to revert the string to an array, so:

$('#dropdown').selectpicker('val', JSON.parse(strWard));

Edit, with single quotes fixed:

var wards = dsFilterOptions.Wards.split(",");
var strWard = '[';
for (i = 0; i < wards.length; i++) {
    strWard += '"' + wards[i] + '",';
}
strWard = strWard.slice(0, -1); //remove last ma
strWard += ']';
$('#dropdown').selectpicker('val', JSON.parse(strWard));

response.user_accounts is an array, but it just shows the first value as a dropdown selection, not all values of the array. Please suggest

if (response.user_accounts) {
          $('#account').selectpicker('val', response.user_accounts.account_id);
        }