is-react | Determine if a variable statement is a React element | Frontend Framework library
kandi X-RAY | is-react Summary
kandi X-RAY | is-react Summary
Determine if a variable or expression is a valid element or component in React. A library to determine if a variable or an expression is a React element or component. For a more thorough understanding, this article describes elements and components in React, and this article gives an understanding of the JSX syntax.
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QUESTION
I would like to render the stockprice graph referred from https://canvasjs.com/react-stockcharts/stockchart-date-time-axis-react/
ANSWER
Answered 2021-Mar-11 at 09:46In case of column chart datapoints, y-value should be numeric but you are passing it as an array. If you like to show multiple values (a range) in y-value, you can use Range-Column Chart. Please find the working code below. Checkout this working sample.
QUESTION
I am revamping a blog to Gatsby which is lightning fast, everything seems perfect but I am facing different sort of issue, as the images I have via Netlify CMS aren't appearing properly in the blog, the images are appearing blur. I don't know what is going wrong here.
Here is the example of the problem statement
here is the excerpt of my gatsby-config.js.
...ANSWER
Answered 2020-Mar-24 at 06:16I am more interested in how do you call those images in your components rather than in the package.json (it doesn't seem a dependencies issue) because inspecting the code, it seems that you've added the /static path which is not required. As it is shown in the following screenshot:
Regarding the updates coming from the comments below, we've figured out that the issue is related directly to this GitHub issue where apparently images retrieved by a markdown are blurring. What solves the issue is to pass a withWebp parameter in Gatsby's configuration, so in gatsby-config.js:
QUESTION
const storeProducts = fetch('https://yalantis-react-school.herokuapp.com/api/v1/products/').then(res => res.json()).then(res => console.log(res))
const detailProduct = fetch('https://yalantis-react-school.herokuapp.com/api/v1/products/4423b750-48ea-424a-9432-c77261bb4682').then(res => res.json()).then(res => console.log(res))
Object.keys(storeProducts).forEach(item => tempProducts.push({ ...item })
);
console.log(storeProducts)//returns promise
console.log(detailProduct)//returns promise
const initialState = {
products: tempProducts,
productDetails: { ...detailProduct }
};
I'll start with the fact that the app worked fine while the data from the variables included the json from the local file. as soon as the server requests were assigned to the variables, the data stopped loading. ps there are no errors in the console, the console log returns:
''''
// (from console.log outside from fetch)it seems the variables are assigned a promise, not data from the server
Promise {}__proto__: Promise[[PromiseStatus]]: "resolved"[[PromiseValue]]: undefined
Promise {}__proto__: Promise[[PromiseStatus]]: "resolved"[[PromiseValue]]: undefined
//console.log(res) of data inside fetch
{items: Array(10)}items: (10) [{…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}]__proto__: Object
product.js:14
{isEditable: false, id: "4423b750-48ea-424a-9432-c77261bb4682", name: "Handcrafted Soft Table", price: 407, origin: "europe", …}
ANSWER
Answered 2020-Jan-29 at 14:13You need to await the request until the promise is resolved. After that you can have you output. You can do something like:
QUESTION
ANSWER
Answered 2019-May-17 at 13:51I found the solution, problem was I imported marked as named import {import {marked} from 'marked' instead of import as default like this import marked from 'marked'
QUESTION
I`m working on mobile app with React Native and Expo, providing security solutions. Project owner want to store in app sensitive authorization keys, used to contact with REST server and access to secured data. He demand to have this keys at least encrypted, and hard to read from outside as much as possible.
I know about topis:
Save sensitive data in React Native
Is React Native's Async Storage secure?
and about KeyChain, but they dont cover encyption and expo issues.
So with is the best and common solution for making this data save as possible in React Native Expo app?
...ANSWER
Answered 2017-Jun-20 at 11:44I am recently involved in a React Native project with security concerns like yours. Security is not an easy issue and I am not an expert, but this is what we did.
We used react-native-aes-encryption for encryption and hashing, react-native-rsa for generating public/private key pairs. In order to use these libraries properly, you better need to know basic cryptography concepts.
We used react-native-keychain to read/write data from keychain. Keychain is the way to go if you want to store some small sensitive data. It has been used in all Apple OS's in order to keep your passwords safe. That said this component is not working as seamless as expected on the Android side if you want to build your app for both platforms.
Other than that I have no idea about expo. I hope these libraries work for you as well.
QUESTION
Here on this link (as a lotta people referring to, for understanding React 16's architecture) it is mentioned:
Even Elements in React are plain JS objects that contains info about the component, having the following four props:
...ANSWER
Answered 2018-Jul-24 at 13:26The difference is not about the properties of the structures but about what they represent.
A React Element is a object that describes what you want to see on the screen. Basically what comes out the render method.
A React fiber (lower case) is a data structure that represents a unit-of-work.
The great advantage of React Fiber (upper case) is the scheduling. React now can pauses, to allow other things to happen and, resume back to where it left. For this React needs to know where it left and what needs to be done next. And that is what a fiber allows (between other things).
QUESTION
I want to edit the image by using put method but when I give the path it shows 'filename' undefined .Image updating but i when skip to edit image then it shows me filename undefined
...ANSWER
Answered 2018-Aug-09 at 06:08body-parser handles JSON and urlencoded form submissions, not multipart (which would be the case if you're uploading images). Thus it is showing this issue. In order to use that ,you can simply use multer package.
QUESTION
I am following this tutorial - https://www.youtube.com/watch?v=Smk2FusU_70 (Right at the 28:38 mark)
However it came out before v4 and I'm getting an error:
...ANSWER
Answered 2017-Nov-27 at 20:07Use matchPath for React Router 4+
As noted above, though off topic from your question... you should be using StaticRouter for React Router 4
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