React-demo | 1 | Frontend Framework library
kandi X-RAY | React-demo Summary
kandi X-RAY | React-demo Summary
1.最后一个script标签的type属性为text/jsx。这是React独有的JSX语法,跟JavaScript不兼容。凡是使用JSX的地方,都要加上type="text/jsx". 2.React提供两个库:react.js和JSXTransformer.js,它们必须首先加载。其中,JSXTransformer.js的作用将JSX语法 转化为JavaScript语法。 3.React.render是React的最基本方法,用于将模板转为HTML语言,并插入指定的DOM节点。. 组件并不是真实的DOM节点,而是存在于内存之中的一种数据结构,叫做虚拟DOM(virtual DOM)。只有当它插入文档以后,才会变成真实的DOM。根据React的设计,所有的DOM变动,都先在虚拟DOM上发生,然后再将实际发生变动的部分,反映在真实DOM上,这种算法叫做DOM diff,它可以极大提高网页的性能表现。 但是,有时需要从组件获取真实DOM的节点,这时就要用到React.findDOMNode方法。.
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Trending Discussions on React-demo
QUESTION
I am using highcharts-react-official as for using the highcharts. I can display the column graph which I want. The requirement is after clicking over each column, a table related to that column's detailed information needs to be displayed with some hyperlinks. I am unable to create that Table. Would like to prefer antd table, but any table is appreciated, and would like to close the table with a close button. Can someone please help me with this? Thank you!!!
EDIT https://codesandbox.io/s/highcharts-react-demo-forked-kn1zu?file=/demo.jsx Added the code here. Alert seems to be working but not a table. I would like to see the table there. The table should contain the details of the drill-down series along with that some more information I would like to add by passing an array. And should vanish when clicking on the Back button. Can u please help me how to do so? Thanks a lot.
...ANSWER
Answered 2021-Apr-30 at 12:58Here is an example of how it can be done. You are trying to return HTML from a function inside Highcharts. React is unaware of this thus, it does not render anything.
QUESTION
I have created donut chart in highcharts, in which data value changes on select of a dropdown.
On select from dropdown, data changes but chart doesnot re-renders and updated data is also not shown in chart. Chart remains same for any data.
I tried including oneToOne={true}. But it also doesnot help.
There are some similar questions regarding same, but they were not helpful for my case.
If anyone got any idea or need any further information please let me know.
...ANSWER
Answered 2021-Apr-20 at 07:07One solution is to use useEffect
hook and pass details
in useEffect dependencies, so every time details will change his state useEffect will be trig and your dataValues will be updated:
QUESTION
I have two javascript libraries that I need to integrate into my React app. First I tried this:
...ANSWER
Answered 2021-Mar-19 at 22:35Install it as a local package. Run the following:
QUESTION
I'm new to react and confused about how to import, export, and render components. I have a fakeData.json file located in the same src/components folder as the component I'm trying to render. Here is the index.html
...ANSWER
Answered 2021-Mar-11 at 18:42You can not directly import your json array from the JSON file in react. To achieve that you must store your JSON array in a variable and then export default
your JSON array. By Doing this you can easily import
it in your component.
FakeData.js
QUESTION
I want to make project with django backend and React frontend. I have created a project using and then create a frontend react folder using create-react-app
. Now I want to upload my projectname folder to my github repository. But when I add my files using git add .
command from my root folder('projectname' folder). It shows some warnings given below. What should I do? Please help.
ANSWER
Answered 2021-Mar-11 at 05:15Maybe your react project i.e. frontend is also a git repository. So, what you can do is, put the frontend on the outside of the projectname folder and use the API key that you have from the backend in the frontend for your work.
You can follow this link:
https://www.digitalocean.com/community/tutorials/build-a-to-do-application-using-django-and-react
QUESTION
I am using Highchart in a react application. I am defining pie configs in a config file and it is used in a component. The component is responsible for rendering highchart by using updated chart config with dynamic values.
...ANSWER
Answered 2021-Feb-11 at 13:24Notice that Highcharts callbacks don't accept the JSX components. Take a look at this example if you want to use the JSX components in Highcharts - https://gist.github.com/jon-a-nygaard/7d0253b2c73ae634d5804d6794a67c0c
Example without using the JSX: https://codesandbox.io/s/highcharts-react-demo-forked-z13sh
QUESTION
I created a React app and then integrated Tailwind to it. When I ran npm start
, I got this error.
ANSWER
Answered 2020-Dec-21 at 00:10I had the same issue today and solved it by updating Node.js to the latest version.
flatMap
was introduced with Node.js v11. You are probably using an older version. You can check it by running: node -v
.
I suggest managing node versions using NVM:
Very simple to install with cURL:
curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.37.0/install.sh | bash
Then restart your terminal, and to install the latest Node.js version just run nvm install node
.
To check if the Node.js version you are using has changed, you can run node -v
again.
QUESTION
Here is my code i am trying to add image but its shows error
background-image: url('/images/img-2.jpg');
Failed to compile.
./src/App.css (./node_modules/css-loader/dist/cjs.js??ref--5-oneOf-4-1!./node_modules/postcss-loader/src??postcss!./src/App.css) Error: Can't resolve '/images/img-2.jpg' in 'E:\React\react-demo\src'
...ANSWER
Answered 2020-Dec-03 at 12:36You can try to write like path under public folder
QUESTION
I am trying to add Application Insights in my ReactJS Application. I changed the JS code that is provided on the GitHub Demo to TypeScript.. now I have
...ANSWER
Answered 2020-Nov-09 at 14:40Given the example above, I hit the same issue. I added the following:
QUESTION
The goal is to keep track of which region/area the user is currently in as they drill-down and drill-up on the map. I am accomplishing this with a state in my react component, however, I get a TypeError: h.remove is not a function
error when I simply try to set the state within the drill-up event function.
I believe this is an issue within the Highcharts library and not my own code, but please let me know otherwise as well as if there are any workarounds for the issue.
Here is my sample code to replicate the problem.
...ANSWER
Answered 2020-Oct-05 at 09:45Use the drillupall
callback instead of drillup
.
Demo: https://codesandbox.io/s/highcharts-react-demo-forked-xpk9o
API: https://api.highcharts.com/highcharts/chart.events.drillupall
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