Simple
An expression script using the Simple REST language. The label Simple expression expects to hold a legal, Simple script and to be read and evaluated by a Simple expression interpreter. An example expression that combines text with a field value is
"State: " CONCAT State_Name
Note that quotes are needed around the literal text. See https://developers.arcgis.com/documentation/common-data-types/labeling-objects.htm for full documentation on the labelExpression syntax and functions. Warning: If the expression attempts to use attributes which don't exist then no label will be produced. This is distinct from the attribute existing but having a null or empty value, which can form part of the produced text label.
Constructors
Create a label Simple expression with an empty expression script. An empty script is a legal Simple expression that will evaluate to an empty string.
Create a label Simple expression with a specific Simple script. The expression is expected to be a complete, self-contained Simple expression.
Properties
The label expression script string. The expression is expected to be a complete, self-contained label expression in the language specified by the label expression subclass object. Warning: If the expression attempts to use attributes which don't exist then no label will be produced. This is distinct from the attribute existing but having a null or empty value, which can form part of the produced text label.