super — Using super.prop in object literals
Super can also be used in the object initializer notation. In this example, two objects define a method. In the second object, super calls the first object's method. This works with the help of {{jsxref("Object.setPrototypeOf()")}} with which we are able to set the prototype of obj2 to obj1, so that
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Super can also be used in the object initializer notation. In this example, two objects define a method. In the second object, super calls the first object's method. This works with the help of {{jsxref("Object.setPrototypeOf()")}} with which we are able to set the prototype of obj2 to obj1, so that super is able to find method1 on obj1.
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MDN Web Docs — files/en-us/web/javascript/reference/operators/super/index.md :: Using super.prop in object literals ↗Revision d14bee540b53 · CC-BY-SA-2.5