The code assigns a value to a read-only identifier. This is not allowed because code cannot write to read-only identifiers.
The const statement defines a read-only field or a constant. A function get statement without a matching function set statement defines a read-only property.
To correct this error
-
Make sure the code does not assign values to read-only identifiers.
-
Define the field or variable with the var statement to make it assignable.
-
Add a matching function set statement to the property to make it assignable.
See Also
Reference
const Statementfunction get Statement
function set Statement
Concepts
Other Resources
JScript ReferenceClass-based Objects