Fix multiple issues with new operator page; add example with classes #16608
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Preview URLsFlawsNone! 🎉 External URLsURL: No new external URLs (this comment was updated 2022-05-24 03:53:52.971155) |
wbamberg
requested changes
May 24, 2022
wbamberg
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May 24, 2022
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| You can always add a property to a previously defined object instance. For example, the statement `car1.color = "black"` adds a property `color` to `car1`, and assigns it a value of `"black"`. | ||
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| However, this does not affect any other objects. To add the new property to all objects of the same type, you must add the property to the constructor's `prototype` property. This defines a property that is shared by all objects created with that function, rather than by just one instance of the object type. The following code adds a `color` property with value `"original color"` to all objects of type `Car`, and then overwrites that value with the string `"black"` only in the instance object `car1`. For more information, see [prototype](/en-US/docs/Learn/JavaScript/Objects/Object_prototypes). |
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This does seem a bit off-topic for this page, but not sure it is worth doing anything about now.
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Right... We mention prototypes and constructor functions in a lot of places, some of which are phrased in a confusing way (e.g. #16290), others could be biased towards classes, but cleaning them up is a bit intractable.
wbamberg
approved these changes
May 24, 2022
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Summary
Motivation
constructor.prototypeandinstance.__proto__, I've made the wording less ambiguous.Supporting details
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