react | react 逐行源码分析 | Frontend Framework library

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kandi X-RAY | react Summary

react is a JavaScript library typically used in User Interface, Frontend Framework, React applications. react has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

react 逐行源码分析

Support

Quality

Security

License

Reuse

Support

react has a low active ecosystem.

It has 29 star(s) with 4 fork(s). There are 3 watchers for this library.

It had no major release in the last 6 months.

react has no issues reported. There are 1 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of react is current.

Quality

react has 0 bugs and 0 code smells.

Security

react has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

react code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

react does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

react releases are not available. You will need to build from source code and install.

react saves you 672 person hours of effort in developing the same functionality from scratch.

It has 1557 lines of code, 0 functions and 43 files.

It has low code complexity. Code complexity directly impacts maintainability of the code.

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react Key Features

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react Examples and Code Snippets

No Code Snippets are available at this moment for react.

Community Discussions

Trending Discussions on react

React - Each child in a list should have a unique “key” prop

Why is this printing twice to my console?

My chainlink request isn't getting fulfilled?

Fetch data from Cloud Firestore and store it in a constant

How to make an axios get request on page load, then render a am4chart with that data?

React Native - Justify Content not Working

Getting an error "TypeError: Cannot read property 'split' of undefined"

How could I mock a connection in apollo with graphQL to test in jest?

How to type object in a material ui select

keep the data in app even when i navigate to other pages and back

QUESTION

React - Each child in a list should have a unique “key” prop

Asked 2021-Jun-16 at 03:48

I am working on a React Web Application Where I fetch and display student data from an API and I keep getting the error,

Warning: Each child in a list should have a unique "key" prop. Check the render method of Accordion

Accordion.js being one of my components of my Web Application

Any Help to fix this issue would be appreciated :)

I have tried passing a key prop with an id to the Accordion component from a parent component, but that did not seem to work. Could it be that I need to pass a key in my test score paragraph?

...

ANSWER

Answered 2021-Jun-15 at 23:21

On line 23

Make the following change

Source https://stackoverflow.com/questions/67994529

QUESTION

Why is this printing twice to my console?

Asked 2021-Jun-16 at 02:48

I am running the following in my React app and when I open the console in Chrome, it is printing the response.data[0] twice in the console. What is causing this?

...

ANSWER

Answered 2021-Jun-16 at 02:48

You have included fetching function in the component as it is, so it fires every time component being rendered. You better to include fetching data in useEffect hook just like this:

Source https://stackoverflow.com/questions/67995505

QUESTION

My chainlink request isn't getting fulfilled?

Asked 2021-Jun-16 at 00:09

Can someone help me investigate why my Chainlink requests aren't getting fulfilled. They get fulfilled in my tests (see hardhat test etherscan events(https://kovan.etherscan.io/address/0x8Ae71A5a6c73dc87e0B9Da426c1b3B145a6F0d12#events). But they don't get fulfilled when I make them from my react app (see react app contract's etherscan events https://kovan.etherscan.io/address/0x6da2256a13fd36a884eb14185e756e89ffa695f8#events).

Same contracts (different addresses), same function call.

Updates:

Here's the code I use to call them in my tests

...

ANSWER

Answered 2021-Jun-16 at 00:09

Remove your agreement vars in MinimalClone.sol, and either have the user input them as args in your init() method or hardcode them into the request like this:

Source https://stackoverflow.com/questions/67829219

QUESTION

Fetch data from Cloud Firestore and store it in a constant

Asked 2021-Jun-15 at 23:56

const set = firebase.firestore().collection("workoutExercises").doc(firebase.auth().currentUser.uid).get()
  console.log(set)

...

ANSWER

Answered 2021-Jun-15 at 23:56

Firebase calls like this are asynchronous, meaning they don't return immediately. In Javascript, you can deal with this in a couple of different ways, using async/await or Promises.

Here's an example using a Promise:

Source https://stackoverflow.com/questions/67994072

QUESTION

How to make an axios get request on page load, then render a am4chart with that data?

Asked 2021-Jun-15 at 22:40

I have the wackiest bug. Like....the wackiest! If any of ya'll want to put eyes on this, awesomesauce! I really appriciate it! I am creating a survey with REACT, Redux, SQL, HML, Material-ui, and CSS.

I've created a graph of information with am4charts using data from a database. Everything is working and will show up on the page......but not on page load. What I am seeing in my console is that the page will load, it fires off my get request but doesn't return with the data fast enough (I think). By the time that the get request loads, my graph has populated with no data.

Here is the code that I have for the page that I am rendering. What is really odd is that, once my code has run, I can cut a line of code (I've been using a console log). And then the graph will render and load.

...

ANSWER

Answered 2021-Jun-15 at 22:40

Can you try this fix? I created new functions for some tasks.

https://codesandbox.io/s/vigorous-varahamihira-6j588?file=/src/App.js

Source https://stackoverflow.com/questions/67994079

QUESTION

React Native - Justify Content not Working

Asked 2021-Jun-15 at 21:59

I've been struggling with this all over my react-native app, so I set up a very simple example of it in codesandbox which you can view here:

https://codesandbox.io/s/elastic-star-5754q?file=/src/App.js

Within the View with the green background, all of the internal views are centered horizontally within their respective spaces as I would expect thanks to the "alignItems: center" style property. I would expect that I could also center them vertically within their spaces by setting "justifyContent: center", but that doesn't seem to work for me.

Am I fundamentally misunderstanding something?

...

ANSWER

Answered 2021-Jun-15 at 21:59

The problem is that you are not aligning the text within the individual Views. Your example mistakenly aligns the inner View elements within the larger View element rather than aligning the text.

To center-align the text vertically within their Views you just need to add justifyContent: "center" to those individual three green Views.

Here's an example: https://codesandbox.io/s/recursing-kirch-n8one?file=/src/App.js:393-417

To further explain why you were experiencing the issue you did, see this screenshot with boxes outlining the space the elements were taking up on-screen:

You can see the inner Views are only taking up the needed width of the text elements inside, but are using the max height available to them.

Source https://stackoverflow.com/questions/67993642

QUESTION

Getting an error "TypeError: Cannot read property 'split' of undefined"

Asked 2021-Jun-15 at 20:51

I am working in react application and founded this stubborn thing. This is my state in react to which i am working on

...

ANSWER

Answered 2021-Jun-15 at 20:51

You seem to be confusing useState with the class component's state.

Running setState({ testInfo: testInfoArray }); sets the entire state to { testInfo: testInfoArray }, removing state.selectedParagraph entirely, causing it to be undefined.

You'll want to use useState multiple times, like this:

Source https://stackoverflow.com/questions/67993048

QUESTION

How could I mock a connection in apollo with graphQL to test in jest?

Asked 2021-Jun-15 at 20:47

I'm trying to somehow test a hooked file that uses an Apollo client connection entry and GraphQL:

See the error:

...

ANSWER

Answered 2021-Jun-15 at 20:47

I finally found the solution to the problem:

Source https://stackoverflow.com/questions/67944184

QUESTION

How to type object in a material ui select

Asked 2021-Jun-15 at 20:40

I'm trying to implement a Select component using reactjs material ui and typescript.

However, I am getting the following typing error:

...

ANSWER

Answered 2021-Jun-15 at 20:40

From what it looks like, options is actually an array of objects rather than just an object. So all you would need to do is map over the options variable. You are currently using Object.keys which is what you use if you are wanting to iterate over the keys in an object.

Source https://stackoverflow.com/questions/67993116

QUESTION

keep the data in app even when i navigate to other pages and back

Asked 2021-Jun-15 at 20:35

I'm using React and Next.js with Firestore. On one page I get data from Firebase with useEffect only once the page is rendered. But since the get is kind of costly (lots of read), I want to persist the data fetched even when the user navigates to other pages and back to this page, so that I don't need to fetch again. How can I do that? Thanks!

...

ANSWER

Answered 2021-Jun-15 at 19:03

There are multiple ways but one good way would be to use Context, create a data store context which would store your data and then you can read from it as a single source of truth.

Source https://stackoverflow.com/questions/67992020

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Vulnerabilities

No vulnerabilities reported

Install react

You can download it from GitHub.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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