![]() ![]() However, this tool requires discipline to effectively control what is on the context and what can edit it. We found React Contexts enabled easy data sharing. This helped us keep the responsibilities of each component narrow and improved the readability of the code. The benefit was that we could check at each layer to ensure the types only exposed the attributes and the functions that the component was interested in. We decided to shift to a state object that is propped down from component to component. However, the code became difficult to maintain and understand, even on a small team where everyone had full knowledge of the codebase. We could click a button and changes would propagate through multiple steps and components. Within four weeks of development, the state was enabling interesting behaviors. The workflow developed hard-to-diagnose bugs that involved the state object being manipulated in unexpected ways. When a component imports useContext, it gains read and write access to the full state. The problem was that it became too tempting to modify variables that the current workflow step shouldn’t have had any power over. The state type was all in one file, which stayed readable. We added the information the workflow needed and quickly saw the context state expanding with functions and variables. We learned about useContext and started implementing it on our project to store information across all steps in a user workflow. Benefits of using React’s context include ease of importing and the ability to add the useContext hook to any component without modifying the props. You can modify the variables in a React context with functions that are a part of the state itself. It also allows for multiple different contexts within a web app depending on which components the app renders. This simplicity makes React contexts flexible. The provider is a React component that sets the initial state and allows all descendants to access the state. The state can be any collection of variables and functions. React context allows a state object to be read and written to form any component that imports the useContext hook and access to a provider in the component hierarchy. I looked at useContexts and started using them in a project but ultimately went with component props instead. One way to remember information across renders in React is with state, specifically useContext hooks. When we enter an email into a website, we expect that website to remember the email and not have to enter it over and over each time it displays. Web apps maintain state to enable more advanced user interactions. ![]()
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