Scrollbar in listbox refuses to disappear

Is there a way to hide the scrollbar on a list box only when it's necessary? I've been struggling to achieve this behavior, as the scrollbar always seems to be present. I'm currently using Chromium, but I haven't tested how it behaves in other browsers.

Sample HTML Code

<select size="2">
    <option>item</option>
    <option>item</option>
    <option>item</option>
    <option>item</option>
    <option>item</option>
</select>

Sample CSS Code

select {
    width: 200px;
    min-height: 400px;
    overflow: auto;
}

http://jsfiddle.net/jmRmv/

The provided code snippet results in:

htmlcss

Answer №1

If you want to achieve this effect, a combination of CSS magic and JavaScript can get the job done. While it may not be the most elegant solution, it does work.

Check out the JSFiddle demo here.

Custom CSS Styles

.wrapper {
    display: inline-block;
    vertical-align: top;
    overflow: hidden;
    border: solid black 1px;
}
.select {
    width: 200px;
    min-height: 50px;
    margin: 0 -20px 0 0;
}
.select.scrolling {
    margin: 0;
}

Embedding HTML Code

<div class="wrapper">
    <select id="select" class="select" size="2">
        <option>item 1</option>
        <option>item 2</option>
        <option>item 3</option>
        <option>item 4</option>
        <option>item 5</option>
        <option>item 6</option>
    </select>
</div>

Interactive JavaScript Scripts

var select = document.getElementById('select');

if (select.clientHeight < select.scrollHeight) {
    select.classList.add('scrolling'); // classList: IE9 and higher
}

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