How to get attribute from selected option of select in jQuery?

问题

I have the next selectbox in HTML:

<select id="listbox-taskStatus" class="selectpicker">
    <option status="0">In progress</option>
    <option status="1">Not started</option>
    <option status="2">Done</option>
    <option status="3">Failed</option>
</select>

I want to read the attribute value from selected option.

If just to take the value, it's simple:

var value = $('#listbox-taskStatus').val();

But what should I do, if I want to get the attribute value from selected option? I know, that .attr() must help, but when I tried to use it I've got the incorrect result.

I've tried the next:

var status = $('#listbox-taskStatus option').attr('status');

But the returned value is always 0 despite on fact I was selecting different option.

What's wrong, how to solve my problem?

回答1:

Use :selected Selector

var status = $('#listbox-taskStatus option:selected').attr('status');

However, I would recommend you to use data- prefixed attribute. Then you can use .data()

var status = $('#listbox-taskStatus option:selected').data('status');

DEMO

来源：https://stackoverflow.com/questions/25430552/how-to-get-attribute-from-selected-option-of-select-in-jquery