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Re: [deviceorientation] Invalid IDL in DeviceMotionEventInit

From: Reilly Grant via GitHub <sysbot+gh@w3.org>
Date: Fri, 28 Sep 2018 17:28:03 +0000
To: public-device-apis-log@w3.org
Message-ID: <issue_comment.created-425508807-1538155682-sysbot+gh@w3.org>
In Chromium, when the invalid '?' are removed then you get the following,

```javascript
> new DeviceMotionEvent('', {acceleration: {}}).acceleration
DeviceAcceleration {x: null, y: null, z: null}
> new DeviceMotionEvent('', {acceleration: null}).acceleration
DeviceAcceleration {x: null, y: null, z: null}
> new DeviceMotionEvent('', {acceleration: undefined}).acceleration
null
> new DeviceMotionEvent('', {}).acceleration
null
```

Based on my understanding from the discussion above this is correct according to the WebIDL specification.

The change from the non-compliant behavior is in this case,

```javascript
> new DeviceMotionEvent('', {acceleration: null}).acceleration
null
```

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Received on Friday, 28 September 2018 17:28:05 UTC

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