Mount
Mounting is the lifecycle phase in which a component is created and its initial rendered representation is inserted into the user interface.
Build a Frontend Web Framework (From Scratch)
Mounting is the process of creating browser DOM nodes from a virtual DOM tree and inserting them into a parent element.
- How it is used
- Creates an SPA’s initial browser view from its virtual DOM before later state changes are handled by patching.
- How deep it goes
- Defines mounting and separates it from patching and unmounting, while stopping short of detailed mountDOM implementation.
- Examples
- Uses a programmatically created paragraph and a rendering-flow diagram to illustrate initial view creation.
- What you can do after
- Build it from scratch by obtaining a virtual DOM, mounting its nodes, and inserting them into a parent element.
Read how Build a Frontend Web Framework (From Scratch) explains mount →
React Quickly, Second Edition
- How it is used
- Uses mounting to schedule initial data loading, start timers, attach listeners, and coordinate cleanup with component lifetime.
- How deep it goes
- Explains conditional mounting, effect dependencies, cleanup, asynchronous cancellation, and class lifecycle methods without detailing React internals.
- Examples
- Demonstrates remote dropdowns, stopwatches, conditional visibility, event listeners, and class-based lifecycle method order.
- What you can do after
- Apply mounting via React effects to initialize data, timers, and listeners, then clean them up when components unmount.
Web Components in Action
Mounting is the process of creating a component's rendered representation and inserting it into the DOM.
- How it is used
- Frames mounting as the creation-and-insertion phase of a React component lifecycle.
- How deep it goes
- Defines DOM insertion and names mounting methods, but stops short of explaining their detailed execution.
- Examples
- Uses a component’s generated HTML and its insertion into the DOM as the concrete example.
- What you can do after
- Evaluate mounting as the point where a React component gains its initial DOM representation.
Related concepts
- lifecyclepart of · A lifecycle is the sequence of stages or states an entity, process, or artifact passes through during its existence.
- virtual DOMuses · A virtual DOM is an in-memory user-interface tree that frameworks compare or process to determine updates to the rendered DOM.
- initializerhas part · An initializer is a function, declaration, or language construct that establishes the initial value or state of an object, value, computation, or process.
- componentdidmounthas part · componentDidMount is a React class-component lifecycle method invoked after the component has been mounted into the DOM.
- unmountingcontrasts with · Unmounting is the lifecycle phase in which a component is removed from the rendered interface and its representation is discarded.
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