How to set a selected value in a dropdown list using Mustache.js?

Question

Is it possible to do this with Mustache.js?

var data = {"val":"3"},
    template = '<select>' +
                    '<option value="1">1</option>' +
                    '<option value="2">2</option>' +
                    '<option value="3">3</option>' +
                '</select>';

var html = Mustache.to_html(template, data);

$(html).appendTo('body');

Answer 1

The val attribute doesn't work, because a <select> takes its value from the <option>s which have the selected attribute. I'm not very familar with Mustache, but this should work:

// snip...        
var html = Mustache.to_html(template, data);
$(html)
    .find('option[value=3]').attr('selected', true)
    .end().appendTo('body');

I think that the template you're using is not idiomatic Mustache — it's too coarse grained; you're not actually templating anything. Something like this might be more Mustache-y:

var template = '<select>{{#options}}' +
                   '<option value="{{val}}" {{#sel}}selected{{/sel}}>' + 
                       '{{txt}}' + 
                   '</option>' + 
               '{{/options}}</select>',

    data = {options: [
        {val: 1, txt: 'uno'},
        {val: 2, txt: 'dos'},
        {val: 3, txt: 'tres', sel: true}
    ]};

var html = Mustache.to_html(template, data);

$(html).appendTo('body');

Demo →