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" for="a b"></output>
</form>

attributi: attibuti globali || attributi di evento || for || form || name

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