提交时进入新创建的列表元素

Question

I need to get to newly created list elements , so I can loop through them on submit .

Let's Start of with select and empty ul :

<select name="car" id="js_car_select">
    <option value="1">BMW</option>
    <option value="2">Audi</option>
</select>

<ul id="js_car_list"></ul>

and some basic jQuery:

// Append car name to the list on select change
$('#js_car_select').on('change', function() {
    $('#js_car_list').append('<li>' + $(this).find('option:selected').text() + '</li>');
});

After this I have a list of cars as newly created elements.

How can I get to them on submit ? Now when I try, none of the new li elements is available - $('#js_car_list li').length = 0.

How and where should I listen to new elements creation?

EDIT:

The select and ul are part of the interface. On submit I want to append the new list to a form as hidden input s, so they can be serialized with the whole form.

Answer 1

You have to replace

$('#js_car_list').append('<li>' + $(this).text() + '</li>');

with

$('#js_car_list').append('<li>' + $(this).find('option:selected').text() + '</li>');

because $(this) refers to <select> element.

So, in order to append only the selected option, you have to target the selected one with option:selected .

Check the DEMO

$('#js_car_select').on('change', function() {
    $('#js_car_list').append('<li>' + $(this).find('option:selected').text() + '</li>');
});

$(document).on('click', '#submit', function() {
    var list = [];    
    $('#js_car_list > li').each(function() {
        list.push($(this).text());
    });
    // append the list items where ever you want .. 
    alert(list);
});