In the above example, instances of `Avatar`*own* instances of `ProfilePic` and `ProfileLink`. In React, **an owner is the component that sets the `props` of other components**. More formally, if a component `X` is created in component `Y`'s `render()` method, it is said that `X` is *owned by*`Y`. As discussed earlier, a component cannot mutate its `props` — they are always consistent with what its owner sets them to. This key property leads to UIs that are guaranteed to be consistent.
In the above example, instances of `Avatar`*own* instances of `ProfilePic` and `ProfileLink`. In React, **an owner is the component that sets the `props` of other components**. More formally, if a component `X` is created in component `Y`'s `render()` method, it is said that `X` is *owned by*`Y`. As discussed earlier, a component cannot mutate its `props` — they are always consistent with what its owner sets them to. This key property leads to UIs that are guaranteed to be consistent.
It's important to draw a distinciton between the owner-ownee relationship and the parent-child relationship. The owner-ownee relationship is specific to React, while the parent-child relationship is simply the one you know and love from the DOM. In the example above, `Avatar` owns the `div`, `ProfilePic` and `ProfileLink` instances, and `div` is the **parent** (but not owner) of the `ProfilePic` and `ProfileLink` instances.
It's important to draw a distinction between the owner-ownee relationship and the parent-child relationship. The owner-ownee relationship is specific to React, while the parent-child relationship is simply the one you know and love from the DOM. In the example above, `Avatar` owns the `div`, `ProfilePic` and `ProfileLink` instances, and `div` is the **parent** (but not owner) of the `ProfilePic` and `ProfileLink` instances.
Jamie Wong
12 years ago