what is react componentization

React componentization is to divide a complex page into several independent components, each component contains its own logic and style, and then combine these independent components to complete a complex page, which not only reduces Logical complexity and code reuse are achieved.

The operating environment of this tutorial: windows7 system, React17 version, Dell G3 computer.

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Component concept:

We can intuitively A complex page is divided into several independent components, each component contains its own logic and style, and then these independent components are combined to complete a complex page, which not only reduces the logic complexity, but also realizes code reuse;

React recommends rethinking the composition of the UI in the form of components, defining each module with relatively independent functions on the UI as a component, and then combining the small components to form a large component through nesting. Finally, Complete the construction of the overall UI.

is equivalent to our function encapsulation, which separates a code block with a specific function and encapsulates it into an independent function. This function is called when needed. The React component here is encapsulated for the UI interface. The same Nav can be used on multiple interfaces and multiple types of websites, with each UI sub-block forming the entire UI page. In teamwork, code functions are easier to interpret and maintain.

Component features under React:

(1) Composable: a component can be used with other components, or can be directly nested inside another component

(2) Reusable: Each component has independent functions and can be used in multiple scenarios

(3) Maintainable: Each small component only contains itself The logic is easier to understand and maintain

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