You asked, and we listened!
One of the top requests from the ArcGIS Online user community is to support bulk attribute updating.
We are excited to announce that selecting and updating the attributes of multiple features is now available at this update of ArcGIS Online!

You will be able to open the Attribute pane with multiple features selected to view and edit their attributes. Either enter in values to overwrite all the matching fields in your selection, or browse through the carousel of features to make individual changes.
More resources
To learn more about ArcGIS Web Editor, check out the resources below:
Be sure also to check out the NEW VIDEO – An Introduction to Web Editor
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