如何在选择选项字段中选择特定的自定义属性？

Question

I'm fixing a horrendous bug in an old web application. For some datasets, the values in an option/select list are unfortunately not unique. But luckily, the custom attribute test is unique.

So I have the following HTML structure:

<select id="dropdown">
    <option value="1" test="A">fooA</option>
    <option value="2" test="B">fooB</option>
    <option value="2" test="C">fooC</option>
    <option value="2" test="D">fooD</option>
    <option value="2" test="E">fooE</option>
</select>

So I wonder how could set C from the custom attribute test with the help of Jquery or vanilla JS in the select/dropdown field? The .attr() property only changes the properties of the custom attribute test , which I not want. I want to set fooC in the select field.

JSFiddle link to try: http://jsfiddle.net/rnnfk/120/

Answer 1

First you need to select the attribute with the help of css attribute selector then add selected attribute using attr() .

Try this technique. Demo

$('#dropdown option[test=C]').attr( "selected","selected");

Answer 2

You can use attribute selector to get the option with attribute test with specific value.

Live Demo

$('#dropdown option[test=C]').prop('selected', true);

Answer 3

Just add following code in jquery :-

$("#dropdown [test='C']").attr("selected", "selected");

It may help you.