estimatedProgress
An estimate, as a percentage, of the amount of content that is currently loaded.
Declaration
var estimatedProgress: Double { get }Discussion
A number ranging from 0 to 1.0 and, once a load completes, 1.0 until a new load starts, at which point it resets to 0.
The value is an estimate based on the total number of bytes expected to be received for a document, including all its possible subresources. For more accurate load progress information, implement delegates conforming to the WebFrameLoadDelegate and WebResourceLoadDelegate informal protocols.