| Language Reference
Used to sum two numbers or perform string concatenation.
result = expression1 + expression2
The + operator syntax has these parts:
Part Description result Any variable. expression1 Any expression. expression2 Any expression.
The underlying subtype of the expressions determines the behavior of the + operator.
If Then Both expressions are numeric or Boolean Add. Both expressions are strings Concatenate. One expression is numeric and the other is a string Concatenate.
For information on when a run-time error is generated by the + operator, see the Operator Behavior table.
Prepending "+" to a string will convert a numeric string to a number. toString Method e.g. +"123" returns 123 in numeric form.
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