Is there a way in Eclipse to change the ECMAScript compliance level?

In Eclipse 4.5 (Mars) with installed JavaScript Development Tools (JSDT) the default compliance level for ECMAScript is set to ECMAScript 3, which is already very outdated. And the related drop down list to change the compliance level is deactivated, so it’s not possible to change the option.

JavaScript validator preferences not allowing to change ECMAScript compliance level

Is there a way to change those settings to a newer standard like ECMAScript 5 or ECMAScript 2015?


Source: eclipse

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