The countField method returns the number of sub fields that exist with the specified name.
countField ( fieldname [, case])
| Argument | Description | 
|---|---|
| fieldname | (string) The name of the field. | 
| case | (boolean) A boolean that specifies whether the fieldnameargument is case sensitive. The argument is case sensitive by default (true). | 
(Number). The number of sub fields that exist with the specified name.
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