Testing if a property of an object is undefined

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Topic	Testing if a property of an object is undefined
Output	sample code

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Step	Description
1	if (SessionJSON.Result == undefined) { SessionJSON.Result = null;}

Assynchronous functions in javascript for Metro Application

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Topic	Assynchronous functions in javascript for Metro Application
Output	A sample pair of functions

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Step	Description
1	Create the assynchronous function that you will call later function assynchrone_function() { return new WinJS.Promise(function (Jsonoutput) { var entrainementJSON; ... do the assync stuff here ... Jsonoutput(entrainementJSON); }) }
2	Call your function, waiting that it's done before using the return var promise = assynchrone_function(); promise.then(function (data) { ... use the data ... });