React object how to wrap more than one component

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10 Answers

objectcomponentreact
90%

HOC design pattern is applied by many modules as a way of inserting functionality from the module into the components. This is the most prevalent use case of HOCs.,connect() returns a function and is also a function itself, and the single argument passed into that resulting function is the WrappedComponent.,react-cookies enable us to store and retrieve cookies from any component, the functions of which are inserted using withcookies() HOC.

1
const EnhancedHOCComponent = hoc(OriginalReactComponent);
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88%

so how to wrap two componet in the same key in react?,Thanks for contributing an answer to Stack Overflow!, Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers

You can do it like this:

test = {
  a: (
    <React.Fragment>
      <div></div>
      <div></div>
    </React.Fragment>
  )
}

Shorthand:

test = {
  a: (
    <>
      <div></div>
      <div></div>
    </>
  )
}

You can also accomplish it without a React.Fragment like this:

test = {
  a: [
    <div></div>,
    <div></div>
  ]
}
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72%

A higher-order component (HOC) is an advanced technique in React for reusing component logic. HOCs are not part of the React API, per se. They are a pattern that emerges from React’s compositional nature.,Not all HOCs look the same. Sometimes they accept only a single argument, the wrapped component:,Concretely, a higher-order component is a function that takes a component and returns a new component.

const EnhancedComponent = higherOrderComponent(WrappedComponent);
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65%

While this is a valid component, which returns multiple elements wrapped in a div, this will not work with the parent component Table. Take a look at the result of the render:,Fortunately, there is a way around this problem. With this, we won’t have to worry about tweaking the CSS and will also satisfy the requirements for rendering multiple elements.,React.Fragment is not that difficult to implement. We can make an empty component and get the same result.

Pretag
 Pretag team - issue, fix, solve, resolve
75%

The downside to using children is that you can only have one instance of the child prop. Occasionally, you’ll want a component to have custom JSX in multiple places. Fortunately, you can do that by passing JSX and React components as props, which we will cover in the next step.,In this step, you learned how to pass JSX and React components as props to another component. This will give your component the flexibility to handle many situations where a wrapper component may need multiple props to handle JSX or components.,To create wrapper components, you’ll first learn to use the rest and spread operators to collect unused props to pass down to nested components. Then you’ll create a component that uses the built-in children component to wrap nested components in JSX as if they were HTML elements. Finally, you’ll pass components as props to create flexible wrappers that can embed custom JSX in multiple locations in a component.

Pretag
 Pretag team - issue, fix, solve, resolve
40%

For example, this is not possible:,When writing JSX in React, there’s one caveat: you must return one parent item. Not more than one.,Another solution is to use Fragment, a relatively new React feature that solves the problem for us:

const Pets = () => {
  return (
    <Dog />
    <Cat />
  )
}
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22%

One common pattern in React apps is that you want to return multiple components in one element. Using fragments is the way to do this. When you wrap components inside a fragment, you do not add an extra DOM node outside the components that you want to render.

It is easy to use fragments, we just put:

return ( <React.Fragment>
   <ComponentA />
   <ComponentB />
   <ComponentC />
</React.Fragment>);
60%

React always re-renders the component if the state changes, even if the component is wrapped in React.memo().,You gain no performance benefits but also run for naught the comparison function.,Strictly, React uses memoization as a performance hint.

export function Movie({ title, releaseDate }) {
  return (
    <div>
      <div>Movie title: {title}</div>
      <div>Release date: {releaseDate}</div>
    </div>
  );
}

export const MemoizedMovie = React.memo(Movie);
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48%

You can render this component multiple times and in multiple places without repeating your code by using <Cat>:,Class components have a render() function. Whatever is returned inside it is rendered as a React element:,The older class components approach is a little different when it comes to state.

import React from 'react';
import {
   Text
} from 'react-native';
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23%

On line 6 we have a class definition, we need to convert this to a functional component.,With React hooks, we have the best of both worlds: clean functional components that can use state -- David Katz,Now, let's see how to do the same thing with Hooks, using a functional component:

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 Pretag team - issue, fix, solve, resolve

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