Fantasy Land type for React Components

React Dream

Fantasy Land type for React Components

Caution: Experimental (not extremely anymore though)

Installation

npm add react-dream

You will also need a couple of peer dependencies:

npm add react recompose

Usage

Lifting React components into ReactDream

For example, for a ReactNative View:

import ReactDream from 'react-dream'
import { View } from 'react-native'

const DreamView = ReactDream(View)

…or for a web div:

import React from 'react'
import ReactDream from 'react-dream'

const DreamView = ReactDream(props => <div {...props} />)

Complete example

Here is an extensive example that can be found in examples:

If you are not familiar with Fantasy Land types, I can highly recommend the video tutorials by Brian Lonsdorf

Note that this and the following examples use already-built wrappers that you can pull from react-dream-web-builtins. This are convenient but might not be easy to tree shake when bundling, so use with caution.

import React from 'react'
import { render } from 'react-dom'
import { withHandlers, withState } from 'recompose'
import { of } from 'react-dream'
import { Html } from 'react-dream-web-builtins'

const withChildren = North => South => Wrapper => ({ north, south, wrapper, ...props }) =>
  <Wrapper { ...props } { ...wrapper }}>
    <North { ...props } { ...north }} />
    <South { ...props } { ...south }} />
  </Wrapper>

const Title = Html.H1
  .style(() => ({
    fontFamily: 'sans-serif',
    fontSize: 18,
  }))
  .name('Title')

const Tagline = Html.P
  .style(() => ({
    fontFamily: 'sans-serif',
    fontSize: 13,
  }))
  .name('Tagline')

const HeaderWrapper = Html.Header
  .removeProps('clicked', 'updateClicked')
  .style(({ clicked }) => ({
    backgroundColor: clicked ? 'red' : 'green',
    cursor: 'pointer',
    padding: 15,
  }))
  .name('HeaderWrapper')
  .map(
    withHandlers({
      onClick: ({ clicked, updateClicked }) => () => updateClicked(!clicked),
    })
  )
  .map(withState('clicked', 'updateClicked', false))

const Header = of(withChildren)
  .ap(Title)
  .ap(Tagline)
  .ap(HeaderWrapper)
  .contramap(({ title, tagline }) => ({
    north: { children: title },
    south: { children: tagline },
  }))
  .name('Header')

Header.fork(Component =>
  render(
    <Component
      title="Hello World"
      tagline="Of Fantasy Land Types for React"
    />,
    document.getElementById('root')
  )
)

Render part could also be written:

render(
  <Header.Component
    title="Hello World"
    tagline="Of Fantasy Land Types for React"
  />,
  document.getElementById('root')
)

Pointfree style

All methods of ReactDream are available as functions that can be partially applied and then take the ReactDream component as the last argument. This makes it possible to write compositions that can then be applied to a ReactDream object. The elements of the example above could be rewritten as:

import React from 'react'
import { render } from 'react-dom'
import { compose, withHandlers, withState } from 'recompose'
import { ap, removeProps, contramap, map, name, of, style } from 'react-dream'
import { Html } from 'react-dream-web-builtins'

const withChildren = North => South => Wrapper => ({ north, south, wrapper, ...props }) =>
  <Wrapper { ...props } { ...wrapper }}>
    <North { ...props } { ...north }} />
    <South { ...props } { ...south }} />
  </Wrapper>

const Title = compose(
  name('Title'),
  style(() => ({
    fontFamily: 'sans-serif',
    fontSize: 18,
  }))
)(Html.H1)

const Tagline = compose(
  name('Tagline'),
  style(() => ({
    fontFamily: 'sans-serif',
    fontSize: 13,
  }))
)(Html.P)

const HeaderWrapper = compose(
  map(withState('clicked', 'updateClicked', false)),
  map(
    withHandlers({
      onClick: ({ clicked, updateClicked }) => () => updateClicked(!clicked),
    })
  ),
  name('HeaderWrapper'),
  style(({ clicked }) => ({
    backgroundColor: clicked ? 'red' : 'green',
    cursor: 'pointer',
    padding: 15,
  })),
  removeProps('clicked', 'updateClicked')
)(Html.Header)

const Header = compose(
  name('Header'),
  contramap(({ title, tagline }) => ({
    north: { children: title },
    south: { children: tagline },
  })),
  ap(HeaderWrapper),
  ap(Tagline),
  ap(Title)
)(of(withChildren))

API

The following are the methods of objects of the ReactDream type. There are two types of methods:

  • Algebras: they come from Fantasy Land, and they are defined following that specification.
  • Helpers: they are derivations (use cases) of the methods that come from the algebras. Added for convenience.

ReactDream implements these Fantasy Land algebras:

  • Profunctor (map, contramap, promap)
  • Applicative (of, ap)
  • Semigroup (concat)
  • Monad (chain)

Check Fantasy Land for more details.

map(Component => EnhancedComponent)

map allows to wrap the function with regular higher-order components, such as the ones provided by recompose.

import React from 'react'
import ReactDream from 'react-dream'
import { withHandlers, withState } from 'recompose'

const Counter = ReactDream(({counter, onClick}) =>
  <div>
    <button onClick={onClick}>Add 1</button>
    <p>{counter}</p>
  </div>
)
  .map(
    withHandlers({
      onClick: ({ counter, updateCount }) => () => updateCount(counter + 1),
    })
  )
  .map(withState('counter', 'updateCount', 0))

This is because map expects a function from a -> b in the general case but from Component -> a in this particular case since holding components is the intended usage of ReactDream. Higher-order components are functions from Component -> Component, so they perfectly fit the bill.

contramap(props => modifiedProps)

contramap allows to preprocess props before they reach the component.

const Title = H1
  .contramap(({label}) => ({
    children: label
  }))
  .name('Title')

render(
  <Title.Component
    label='This will be the content now'
  />,
  domElement
)

This is a common pattern for higher-order Components, and the key advantage of using contramap instead of map for this purpose is that if the wrapped component is a stateless, function component, you avoid an unnecessary call to React. Another advantage is that functions passed to contramap as an argument are simply pure functions, without mentioning React at all, with the signature Props -> Props.

promap(props => modifiedProps, Component => EnhancedComponent)

promap can be thought of as a shorthand for doing contramap and map at the same time. The first argument to it is the function that is going to be used to contramap and the second is the one to be used to map:

const Header = Html.Div
  .promap(
    ({title}) => ({children: title}),
    setDisplayName('Header')
  )

ap + of

ap allows you to apply a higher-order components to regular components, and of allows you to lift any value to ReactDream, which is useful for lifting higher-order components.

Applying second-order components (Component -> Component) can also be done with map: where ap shines is in allowing you to apply a higher-order component that takes two or more components (third or higher order, such as Component -> Component -> Component -> Component), that is otherwise not possible with map. This makes it possible to abstract control flow or composition patterns in higher-order components:

Control flow example

const eitherLeftOrRight = Left => Right => ({left, ...props}) =>
  left
    ? <Left {...props} />
    : <Right {...props} />

const TitleOrSubtitle = of(eitherLeftOrRight)
  .ap(Html.H1)
  .ap(Html.H2)
  .addProps({isTitle} => ({
    left: isTitle
  }))

render(
  <TitleOrSubtitle.Component isTitle={true}>
    This will be an H1 title
  </TitleOrSubtitle.Component>
  , domElement
)

Parent-children pattern example

const withChildren = North => South => Wrapper => ({north, south, wrapper, ...props}) =>
  <Wrapper { ...props } { ...wrapper }}>
    <North { ...props } { ...north }} />
    <South { ...props } { ...south }} />
  </Wrapper>

const PageHeader = of(withChildren)
  .ap(Html.H1)
  .ap(Html.P)
  .ap(Html.Header)
  .addProps({title, subtitle} => ({
    north: { children: title },
    south: { children: subtitle },
  }))

render(
  <PageHeader.Component
    title='Hello World'
    subtitle='Lorem ipsum dolor sit amet et consectetur'
  />
  , domElement
)

concat

Requires React 16+

concat constructs a new component that wraps the current component and another one being passed as siblings, passing the props to both of them. For example:

import { Html } from 'react-dream'

const Header = Html.H1
  .concat(Html.P)

Since props are passed to both elements in the composition, invoking the above defined Header like this:

<Header.Component>Hello</Header.Component>

…will result in:

<h1>Hello</h1>
<p>Hello</p>

So to make concatenation more useful, it is necessary for the elements to be configured to capture the props that are useful for them:

import { Html } from 'react-dream'

const Header = Html.H1
  .contramap(({title}) => ({children: title}))
  .concat(
    Html.P
      .contramap(({description}) => ({children: description}))
  )

This way the composition can be used like this:

<Header.Component
  title='Hello'
  description='World!'
/>

…and will result in:

<h1>Hello</h1>
<p>World!</p>

Note: while concat is for all practical purposes associative (as far as the resulting elements in the DOM are concerned), the React Components themselves are not joined together in an associative way, and this can be seen in the React DevTools. This violation of associativity is what makes it impossible for ReactDream to implement Monoid.

chain

chain is useful as a escape hatch if you want to escape from ReactDream and do something very React-y

import ReactDream from 'react-dream'
import { Svg } from 'react-dream-web-builtins'

const wrapWithGLayer = Component => ReactDream(props =>
  <g>
    <Component {...props} />
  </g>
)

const LayerWithCircle = Svg.Circle
  .contramap(() => ({
    r: 5,
    x: 10,
    y: 10
  })
  .chain(wrapWithGLayer)

Aside from Fantasy Land algebras, ReactDream provides the methods:

fork(Component => {})

Calls the argument function with the actual component in the inside. This function is intended to be used to get the component for rendering, which is a side effect:

H1.fork(Component => render(<Component>Hello</Component>, domElement))

addProps(props => propsToAdd : Object)

addProps allows you to pass a function whose result will be merged with the regular props. This is useful to add derived props to a component:

import { Svg } from 'react-dream-web-builtins'

const Picture = Svg.Svg
  .addProps(props => ({
    viewBox: `0 0 ${props.width} ${props.height}`
  }))

render(
  <Picture.Component
    width={50}
    height={50}
  />,
  domElement
)

The new props will be merged below the regular ones, so that the consumer can always override your props:

import { Svg } from 'react-dream-web-builtins'

const Picture = Svg.Svg
  .addProps(props => ({
+    // This will be now ignored
    viewBox: `0 0 ${props.width} ${props.height}`
  }))

render(
  <Picture.Component
+    viewBox='0 0 100 100'
    width={50}
    height={50}
  />,
  domElement
)

addProps is a use case of contramap

.addProps(({width, height}) => ({
  viewBox: `0 0 ${props.width} ${props.height}`
}))

…is equivalent to:

.contramap(props => ({
  ...props,
  viewBox: `0 0 ${props.width} ${props.height}`
}))

removeProps(…propNamesToRemove : [String])

removeProps filters out props. Very useful to avoid the React warnings of unrecognized props.

const ButtonWithStates = Html.Button
  .removeProps('hovered', 'pressed')
  .style(({hovered, pressed}) => ({
    color: pressed ? 'red' : (hovered ? 'orange' : 'black')
  }))

removeProps is an use case of contramap

.removeProps('title', 'hovered')

…is equivalent to:

.contramap(({title, hovered, ...otherProps}) => otherProps)

defaultProps(props : Object)

defaultProps allows you to set the, well, defaultProps of the wrapped React component.

const SubmitButton = Html.Button
  .defaultProps({ type: 'submit' })

defaultProps is an use case of map

const SubmitButton = Html.Button
  .defaultProps({ type: 'submit' })

Under the hood is using recompose’s defaultProps function:

import { defaultProps } from 'recompose'

const SubmitButton = Html.Button
  .map(defaultProps({ type: 'submit' }))

propTypes(propTypes : Object)

propTypes sets the propTypes of the React component.

import PropTypes from 'prop-types'

const Title = Html.H1
  .style(({ highlighted }) => ({
    backgroundColor: highlighted ? 'yellow' : 'transparent'
  }))
  .propTypes({
    children: PropTypes.node,
    highlighted: PropTypes.bool
  })

propTypes is an use case of map

The example above is equivalent to:

import PropTypes from 'prop-types'
import { setPropTypes } from 'recompose'

const Title = Html.H1
  .style(({ highlighted }) => ({
    backgroundColor: highlighted ? 'yellow' : 'transparent'
  }))
  .map(setPropTypes({
    children: PropTypes.node,
    highlighted: PropTypes.bool
  }))

style(props => stylesToAdd : Object)

The style helper gives a simple way of adding properties to the style prop of the target component. It takes a function from props to a style object. The function will be invoked each time with the props. The result will be set as the style prop of the wrapper component. If there are styles coming from outside, they will be merged together with the result of this function. For example:

const Title = Html.H1
  .style(props => ({color: highlighted ? 'red' : 'black'}))

render(
  <Title
    highlighted
    style={{backgroundColor: 'green'}}
  />,
  domElement
)

The resulting style will be: { color: 'red', backgroundColor: 'green' }.

style is an use case of contramap

.style(({hovered}) => ({
  color: hovered ? 'red' : 'black'
}))

…is equivalent to:

.contramap(props => ({
  style: {
    color: props.hovered ? 'red' : 'black',
    ...props.style
  },
  ...props
}))

name(newDisplayName : String)

Sets the displayName of the component:

const Tagline = H2.name('Tagline')

name is an use case of map

.name('Tagline')

…is equivalent to:

import { setDisplayName } from 'recompose'

.map(setDisplayName('Title'))

rotate(props => rotation : number)

rotate sets up a style transform property with the specified rotation, in degrees. If there is a transform already, rotate will append to it:

const Title = Html.H1
  .rotate(props => 45)

render(
  <Title.Component style={{ transform: 'rotate(45deg)' }} />,
  document.getElementById('root')
)

…will result in transform: 'translateX(20px) rotate(45deg)'

Just a reminder: rotations start from the top left edge as the axis, which is rarely what one wants. If you want the rotation to happen from the center, you can set transform-origin: 'center', that with ReactDream would be .style(props => ({transformOrigin: 'center'})).

rotate is an use case of contramap

.rotate(props => 45)

…is equivalent to:

.contramap(props => ({
  style: {
    transform: props.transform
      ? `${props.transform} rotate(45deg)`
      : 'rotate(45deg)'
    ...props.style
  },
  ...props
}))

scale(props => scaleFactor : number)

scale sets up a style transform property with the specified scaling factor. If there is a transform already, scale will append to it:

const Title = Html.H1
  .scale(props => 1.5)

render(
  <Title.Component style={{ transform: 'scale(1.5)' }} />,
  document.getElementById('root')
)

…will result in transform: 'translateX(20px) scale(1.5)'

scale is an use case of contramap
.scale(props => 2)

…is equivalent to:

.contramap(props => ({
  style: {
    transform: props.transform
      ? `${props.transform} scale(2)`
      : 'scale(2)'
    ...props.style
  },
  ...props
}))

translate(props => [x : number, y : number, z : number])

translate allows you to easily set up the transform style property with the specified displacement. If there is a transform already, translate will append to it:

const Title = Html.H1
  .translate(props => [30])
  .translate(props => [null, 30])
  .translate(props => [null, null, 30])

…will result in transform: 'translateZ(30px) translateY(30px) translateX(30px)'

translate is an use case of contramap

.translate(({x, y}) => [x, y])

…is equivalent to:

.contramap(props => ({
  style: {
    transform: props.transform
      ? `${props.transform} translate(${x}px, ${y}px)`
      :  `translate(${x}px, ${y}px)`
    ...props.style
  },
  ...props
}))

Debugging

The downside of chaining method calls is that debugging is not super intuitive. Since there are no statements, it’s not possible to place a console.log() or debugger call in the middle of the chain without some overhead. To simplify that, two methods for debugging are bundled:

log(props => value : any)

Whenever the Component is called with new props, it will print:

  • The component displayName
  • The value by the argument function. The value can be anything, it will be passed as-is to the console.log function.

Pretty useful to debug what exactly is happening in the chain:

const Title = Html.H1
  .log(props => 'what props gets to the H1?')
  .log(props => props)
  .contramap(({hovered, label}) => ({
    children: hovered ? 'Hovered!' : label
  }))
  .log(({label}) => 'is there a label before the contramap? ' + label)
  .name('Title')
  .log(({label}) => 'does it also get a label from outside? ' + label)

render(
  <Title.Component hovered label='Label from outside' />,
  domElement
)

log will become a no-op when the NODE_ENV is production.

For more details check out @hocs/with-log documentation which React Dream is using under the hood.

log is an use case of map

.log(({a}) => `a is: ${a}`)

…is equivalent to:

import withLog from '@hocs/with-log'

.map(withLog(({a}) => `a is: ${a}`))

debug()

Careful: This method allows you to inject a debugger statement at that point in the chain. The result will allow you to inspect the Component and its props, from the JavaScript scope of the @hocs/with-debugger higher-order component.

import React from 'react'
import { render } from 'react-dom'
import { Html } from 'react-dream-web-builtins'

const App = Html.Div
  .debug()
  .removeProps('a', 'c', 'randomProp')
  .addProps(() => ({
    a: '1',
    c: '4'
  }))

It will be called on each render of the component.

debug will become a no-op when the NODE_ENV is production.

For more details check out @hocs/with-debugger documentation which React Dream is using under the hood.

debug is an use case of map

.debug()

…is equivalent to:

import withDebugger from '@hocs/with-debugger'

.map(withDebugger)

Built-in Primitives

A separate package, react-dream-web-builtins ships with a complete set of HTML and SVG primitives lifted into the type. You can access them like:

import { Svg, Html } from 'react-dream-web-builtins'

const MyDiv = Html.Div

const MyLayer = Svg.G

Read more in the package README

Download Details:

Author: xaviervia

GitHub: https://github.com/xaviervia/react-dream

#reactjs #javascript #react

What is GEEK

Buddha Community

Fantasy Land type for React Components
Autumn  Blick

Autumn Blick

1598839687

How native is React Native? | React Native vs Native App Development

If you are undertaking a mobile app development for your start-up or enterprise, you are likely wondering whether to use React Native. As a popular development framework, React Native helps you to develop near-native mobile apps. However, you are probably also wondering how close you can get to a native app by using React Native. How native is React Native?

In the article, we discuss the similarities between native mobile development and development using React Native. We also touch upon where they differ and how to bridge the gaps. Read on.

A brief introduction to React Native

Let’s briefly set the context first. We will briefly touch upon what React Native is and how it differs from earlier hybrid frameworks.

React Native is a popular JavaScript framework that Facebook has created. You can use this open-source framework to code natively rendering Android and iOS mobile apps. You can use it to develop web apps too.

Facebook has developed React Native based on React, its JavaScript library. The first release of React Native came in March 2015. At the time of writing this article, the latest stable release of React Native is 0.62.0, and it was released in March 2020.

Although relatively new, React Native has acquired a high degree of popularity. The “Stack Overflow Developer Survey 2019” report identifies it as the 8th most loved framework. Facebook, Walmart, and Bloomberg are some of the top companies that use React Native.

The popularity of React Native comes from its advantages. Some of its advantages are as follows:

  • Performance: It delivers optimal performance.
  • Cross-platform development: You can develop both Android and iOS apps with it. The reuse of code expedites development and reduces costs.
  • UI design: React Native enables you to design simple and responsive UI for your mobile app.
  • 3rd party plugins: This framework supports 3rd party plugins.
  • Developer community: A vibrant community of developers support React Native.

Why React Native is fundamentally different from earlier hybrid frameworks

Are you wondering whether React Native is just another of those hybrid frameworks like Ionic or Cordova? It’s not! React Native is fundamentally different from these earlier hybrid frameworks.

React Native is very close to native. Consider the following aspects as described on the React Native website:

  • Access to many native platforms features: The primitives of React Native render to native platform UI. This means that your React Native app will use many native platform APIs as native apps would do.
  • Near-native user experience: React Native provides several native components, and these are platform agnostic.
  • The ease of accessing native APIs: React Native uses a declarative UI paradigm. This enables React Native to interact easily with native platform APIs since React Native wraps existing native code.

Due to these factors, React Native offers many more advantages compared to those earlier hybrid frameworks. We now review them.

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Mathew Rini

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How to Select and Hire the Best React JS and React Native Developers?

Since March 2020 reached 556 million monthly downloads have increased, It shows that React JS has been steadily growing. React.js also provides a desirable amount of pliancy and efficiency for developing innovative solutions with interactive user interfaces. It’s no surprise that an increasing number of businesses are adopting this technology. How do you select and recruit React.js developers who will propel your project forward? How much does a React developer make? We’ll bring you here all the details you need.

What is React.js?

Facebook built and maintains React.js, an open-source JavaScript library for designing development tools. React.js is used to create single-page applications (SPAs) that can be used in conjunction with React Native to develop native cross-platform apps.

React vs React Native

  • React Native is a platform that uses a collection of mobile-specific components provided by the React kit, while React.js is a JavaScript-based library.
  • React.js and React Native have similar syntax and workflows, but their implementation is quite different.
  • React Native is designed to create native mobile apps that are distinct from those created in Objective-C or Java. React, on the other hand, can be used to develop web apps, hybrid and mobile & desktop applications.
  • React Native, in essence, takes the same conceptual UI cornerstones as standard iOS and Android apps and assembles them using React.js syntax to create a rich mobile experience.

What is the Average React Developer Salary?

In the United States, the average React developer salary is $94,205 a year, or $30-$48 per hour, This is one of the highest among JavaScript developers. The starting salary for junior React.js developers is $60,510 per year, rising to $112,480 for senior roles.

* React.js Developer Salary by Country

  • United States- $120,000
  • Canada - $110,000
  • United Kingdom - $71,820
  • The Netherlands $49,095
  • Spain - $35,423.00
  • France - $44,284
  • Ukraine - $28,990
  • India - $9,843
  • Sweden - $55,173
  • Singapore - $43,801

In context of software developer wage rates, the United States continues to lead. In high-tech cities like San Francisco and New York, average React developer salaries will hit $98K and $114per year, overall.

However, the need for React.js and React Native developer is outpacing local labour markets. As a result, many businesses have difficulty locating and recruiting them locally.

It’s no surprise that for US and European companies looking for professional and budget engineers, offshore regions like India are becoming especially interesting. This area has a large number of app development companies, a good rate with quality, and a good pool of React.js front-end developers.

As per Linkedin, the country’s IT industry employs over a million React specialists. Furthermore, for the same or less money than hiring a React.js programmer locally, you may recruit someone with much expertise and a broader technical stack.

How to Hire React.js Developers?

  • Conduct thorough candidate research, including portfolios and areas of expertise.
  • Before you sit down with your interviewing panel, do some homework.
  • Examine the final outcome and hire the ideal candidate.

Why is React.js Popular?

React is a very strong framework. React.js makes use of a powerful synchronization method known as Virtual DOM, which compares the current page architecture to the expected page architecture and updates the appropriate components as long as the user input.

React is scalable. it utilises a single language, For server-client side, and mobile platform.

React is steady.React.js is completely adaptable, which means it seldom, if ever, updates the user interface. This enables legacy projects to be updated to the most new edition of React.js without having to change the codebase or make a few small changes.

React is adaptable. It can be conveniently paired with various state administrators (e.g., Redux, Flux, Alt or Reflux) and can be used to implement a number of architectural patterns.

Is there a market for React.js programmers?
The need for React.js developers is rising at an unparalleled rate. React.js is currently used by over one million websites around the world. React is used by Fortune 400+ businesses and popular companies such as Facebook, Twitter, Glassdoor and Cloudflare.

Final thoughts:

As you’ve seen, locating and Hire React js Developer and Hire React Native developer is a difficult challenge. You will have less challenges selecting the correct fit for your projects if you identify growing offshore locations (e.g. India) and take into consideration the details above.

If you want to make this process easier, You can visit our website for more, or else to write a email, we’ll help you to finding top rated React.js and React Native developers easier and with strives to create this operation

#hire-react-js-developer #hire-react-native-developer #react #react-native #react-js #hire-react-js-programmer

Kaustav Hazra

1603479480

 Component Life Cycle in React

Every component in React goes through a lifecycle of events. You can think is of going through a cycle of birth, growth, and death the same as the picture below.

The phases are:

  • Initialization — Starting the journey of your component
  • Mounting — Birth of your component
  • Update — Growth of your component
  • Unmount — Death of your component

1. Initialization

This is the phase in which the component is going to start its journey. The developer has to define the props and initial state of the component. This is usually done inside the constructor method (see below to understand the initialization phase better).

#react #react-lifecycle-method #react-course #react-for-beginner #react-js-tutorials

Ethan Hughes

Ethan Hughes

1577975746

10 Best React Loading Component for Your App

While instant feedback from an app or website is best, sometimes your product won’t be able to adhere to speed guidelines. The slow response may be due to poor internet connection or the operation process may take a long time. For such cases, the designer must reassure the user that:
The application is working according to their requirements and the actual process is still active.

If you are unable to shorten the process, you should at least try to make the wait pleasant for your users. Here are 10 react loading components for your react.js application

1. Create React Content Loader

Have you heard about react-content-loader? It’s a SVG component to create placeholder loading, like Facebook cards loading or also known as skeleton UI. So now you can use this online tool to create your own loader easily. You just need to draw using the canvas or code using the live editing!

Create React Content Loader

View Demo: https://danilowoz.com/create-content-loader/

Github: https://github.com/danilowoz/create-content-loader

Download Link: https://github.com/danilowoz/create-content-loader/archive/master.zip

2. react-loading

React-Loading is a React-based Loading animation component library includes many exquisite and beautiful loading components. It will effectively relieve the user’s anxiety when you give loading dynamics tips at the appropriate place and moment in your project. This component library supports on-demand loading, so pick a favorite Loading component now to enrich your project

react-loading

View Demo: http://139.196.82.33:8080/iframe.html?id=demo–demo

Github: https://github.com/sixiaodong123/react-loading

Download Link: https://github.com/sixiaodong123/react-loading/archive/master.zip

3. react-simple-infinite-loading

Someone pointed out the React implementation of the list was a bit complex. I figure out it was possible to write an abstraction for this particular case. Here it is!

This component aims to stay easy to use. If your use case needs more options I recommend using directly awesome libraries from Brian Vaughn listed in dependencies section.

react-simple-infinite-loading

View Demo: https://codesandbox.io/s/magical-shockley-vhkz8

Github: https://github.com/frinyvonnick/react-simple-infinite-loading

Download Link: https://github.com/frinyvonnick/react-simple-infinite-loading/archive/master.zip

4. react-pure-loaders

React Pure Loaders is a package that disponibilizes loaders for your Project. Those loaders are used as components, using color and a loading variables as properties.

The component expects the to receive the color as a string with the hexadecimal code and the loading as a boolean, that is true by default.

react-pure-loaders

View Demo: https://reactpureloaders.io/

Github: https://github.com/jameswlane/react-pure-loaders

Download Link: https://github.com/jameswlane/react-pure-loaders

5. react-loadcon

React component to manipulate the favicon, as a loading or progress indicator, for now. The idea of “Favicon as DOM” is under construction.

react-loadcon

View Demo: https://foreseaz.github.io/react-loadcon/

Github: https://github.com/foreseaz/react-loadcon

Download Link: https://github.com/foreseaz/react-loadcon/archive/master.zip

6. React Nested Loader

The easiest way to manage loaders/errors inside a button. NOT an UI lib.

  • Manage loading/error state of nested views/buttons triggering async actions
  • Not an UI lib, you provide the UI. Works with ReactNative.
  • No boilerplate at all, no need to use setState/Redux

React Nested Loader

View Demo: https://codesandbox.io/s/w640yv5p9w

Github: https://github.com/slorber/react-nested-loader

Download Link: https://github.com/slorber/react-nested-loader/archive/master.zip

7. react-wait

react-wait is a React Hook helps to manage multiple loading states on the page without any conflict. It’s based on a very simple idea that manages an Array of multiple loading states. The built-in loader component listens its registered loader and immediately become loading state.

react-wait

View Demo: https://codesandbox.io/s/y3w5v5lk0j

Github: http://github.com/f/react-wait

Download Link: https://reactjsexample.com/complex-loader-management-hook-for-react/

8. React Redux Loading Bar

A React component that provides Loading Bar (aka Progress Bar) for long running tasks.

Consists of:

  • React component — displays loading bar and simulates progress
  • Redux reducer — manages loading bar’s part of the store
  • (optional) Redux middleware — automatically shows and hides Loading Bar for actions with promises

React Redux Loading Bar

View Demo: https://mironov.github.io/react-redux-loading-bar/

Github: http://github.com/mironov/react-redux-loading-bar

Download Link: https://github.com/mironov/react-redux-loading-bar/archive/master.zip

9. Material UI Image

Images are ugly until they’re loaded. Materialize it with material image! It will fade in like the material image loading pattern suggests.

Material UI Image

View Demo: https://mui.wertarbyte.com/#material-ui-image

Github: http://github.com/TeamWertarbyte/material-ui-image

Download Link: https://github.com/TeamWertarbyte/material-ui-image/archive/master.zip

10. React Lazy Load Image Component

React Component to lazy load images and other components/elements. Includes a HOC to track window scroll position to improve performance.

React Component to lazy load images and components using a HOC to track window scroll position.

React Lazy Load Image Component

View Demo: https://www.albertjuhe.com/react-lazy-load-image-component/

Github: http://github.com/Aljullu/react-lazy-load-image-component

Download Link: https://github.com/Aljullu/react-lazy-load-image-component/archive/master.zip

#loading #react-loading #react-loading-component #react #react-js

Ellis Herbert

Ellis Herbert

1577948509

4 Best React Navbar Component for Your App

React navbar is a horizontal navigation component which apart from traditional, text links, might embed icons, dropdowns, avatars or search forms.

Here are 4 React navbar component that will help your application. Enjoy!

1. React Scrolling NavBar

This Repo is not actively maintained! Please do not use in professional environment!

This is a React navbar component based on react-scroll. While this component is good, it doesn’t support mobile well, especially when there are many items in navbar. That’s why we need another navbar design for more responsiveness, mobile friendliness.

React Scrolling NavBar

Github: https://github.com/lijunray/react-scrolling-nav

Download Link: https://github.com/lijunray/react-scrolling-nav/archive/master.zip

2. react-responsive-navbar

Navbar component that moves the navbar items to a dropdown, if they do not fit in the content area.

react-responsive-navbar

View Demo: https://opuscapita.github.io/react-responsive-navbar/

Github: http://github.com/OpusCapita/react-responsive-navbar

Download Link: https://github.com/OpusCapita/react-responsive-navbar/archive/master.zip

3. react-navbar

React.js component rendering a translatable menu bar with Twitter Bootstrap Navbar HTML markup. For example, for a menu structure like the that:

react-navbar

Github: https://github.com/ikr/react-navbar

Download Link: https://github.com/ikr/react-navbar/archive/master.zip

4. NavbarNative

A fully customizable Navbar component for React-Native.

It works for both iOS and Android!

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View Demo:

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Github: https://github.com/redbaron76/navbar-native

Download Link: https://github.com/redbaron76/navbar-native/archive/master.zip

#React #react-navbar #navbar-component #react-navbar-component