MDN’s new design is in Beta! A sneak peek:

Type: boolean
Gets and sets the value of the disabled attribute.
<!-- Checkbox enables/disables the button -->
<checkbox label="Enable button" 
    oncommand="document.getElementById('buttRemove').disabled = ! this.checked"/>
<button id="buttRemove" label="Remove All" disabled="true"/>

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 Contributors to this page: Sheppy, trevorh, Enn, wtf, madarche, Sevenspade, another_sam, Marsf, Mgjbot, BenoitL, Dria
 Last updated by: Sheppy,