html之output标签

大家都知道有form中有input标签，其实还有一个标签叫output
<output></output>

    <form oninput="result.value=parseInt(a.value)+parseInt(b.value)">
        <input type="range" name="b" value="50" /> +
        <input type="number" name="a" value="10" /> =
        <output name="result"></output>
    </form>

output