Limitations

The MicroEJ engine supports the version 5.1 of the ECMAScript specification, with the limitations described in this page.

Unsupported Directives

Directives, such as 'use strict', are not supported and are considered as literal statements. Literal statements are just ignored.

Unsupported Statements

The following syntaxes are not supported by the MicroEJ JavaScript engine:

  • with (x) { } : the with statement is not supported in MicroEJ since its usage is not recommended. See the reference documentation for more information.

Unsupported Built-in Objects

The unsupported built-in objects are listed in the Built-in objects section.