Specifying optional parameters when calling JavaScript functions in Dart

Question

I'm calling the function window.navigator.geolocation.getCurrentPosition from Dart code. The final parameter to this function is optional. In JavaScript I would set the optional parameters as follows:

var wpid = navigator.geolocation.watchPosition(geo_success, geo_error,
  {enableHighAccuracy:true, maximumAge:30000, timeout:27000});

What would the equivalent be in Dart code? I've tried the following but I'm not sure if it is correct:

window.navigator.geolocation.watchPosition(geo_success, geo_error,
 {'enableHighAccuracy':true, 'maximumAge':30000, 'timeout':27000});

Günter Zöchbauer · Accepted Answer · 2013-12-25 13:06:17Z

1

You are using this method: http://api.dartlang.org/docs/bleeding_edge/dart_html/Geolocation.html#watchPosition

int watchPosition(PositionCallback successCallback, [PositionErrorCallback errorCallback, Object options])

I do not have Dark SDK on this machine, but to me it looks completely fine. If the JavaScript equivalent code is just an object, then passing a Dart Map just like what you have done should be working. Is there a problem with it?

edited Dec 25, 2013 at 13:06

Günter Zöchbauer

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answered Oct 24, 2012 at 8:08

Kai Sellgren

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Comments

Justin Fagnani · Accepted Answer · 2012-10-25 23:25:53Z

0

Hopefully passing a Map works, please try and let us know.

Even if it does work, this is a bad Dart API. The options really should be optional parameters, not properties of an options object. I filed a bug here: http://dartbug.com/6280

answered Oct 25, 2012 at 23:25

Justin Fagnani

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