Addition Assignment Operator (+=) (JScript 5.6)
Adds the value of an expression to the value of a variable and assigns the result to the variable.
result += expression
Arguments
- result
Any variable.
- expression
Any expression.
Remarks
Using this operator is exactly the same as specifying:
result = result + 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 |
Requirements
See Also
Reference
Addition Operator (+) (JScript 5.6)
Concepts
Operator Precedence (JScript 5.6)
Operator Summary (JScript 5.6)