SP.UpgradeInfo.startTime property (sp.js)
The DateTime when the site collection upgrade was started.
Applies to: apps for SharePoint | SharePoint Foundation 2013 | SharePoint Server 2013
var value =SP.UpgradeInfo.get_startTime()
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The DateTime when the site collection upgrade was started.
Applies to: apps for SharePoint | SharePoint Foundation 2013 | SharePoint Server 2013
var value =SP.UpgradeInfo.get_startTime()