SP.ClientContext.formDigestHandlingEnabled property (sp.js)
Gets or sets a value that indicates whether form digest handling is enabled.
Applies to: apps for SharePoint | SharePoint Foundation 2013 | SharePoint Server 2013
var value = SP.ClientContext.get_formDigestHandlingEnabled()
SP.ClientContext.set_formDigestHandlingEnabled(value)
Return value
Boolean
true if form digest handling is enabled; otherwise false. The default value is true.