SP.FieldLookup.allowMultipleValues property (sp.js)

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Gets or sets a value that specifies whether the lookup field allows multiple values.

Applies to: apps for SharePoint | SharePoint Foundation 2013 | SharePoint Server 2013

var value = SP.FieldLookup.get_allowMultipleValues ()

var value = SP.FieldLookup.set_allowMultipleValues ()

Return value

true to specify that multiple values can be used in the field; otherwise, false. The default is false.

Remarks

You cannot set a deletion constraint on a lookup field that allows multiple values.