I am trying and banging my head already while trying to read excel file in Reactjs. I have tried multiple libraries out there like, Sheetjs , excel-parser, exceljs and so on (like 8-9) libraries. I am getting weird and different errors in every library. For example i am using excel-parser and getting followin…
Tag: reactjs
Fetch local JSON file from public folder ReactJS
I have a problem since two days; I want read a local JSON from my public folder on my React application created with react-app. This is my project structure: public data mato.json (my .JSON file) src components App.js Why I put my file in public folder? If I build my project with file in src folder, my file w…
Build error while compiling create-react-app
I am new to Reactjs and am started learning it. I have been trying to start a basic hello world program but its failing at compilation level. Created a start up hello-word program with create-react-app hello-world it gave me a nice folder structure with bunch of files. And Here you can see the compilation err…
Render curly braces as plain text in React/JSX
I am having problems displaying { and } as text in React. I saw a similar question that someone said to wrap the entire string in curlies, but this is not working: The return (<p>{“{{}}”}<p>) causes Is there an easy way to escape curly braces in jsx? Answer I think the issue is just a …
Rendering heavy SVG files (improving performance)
In our company we want to come up with universal solution for creating interactive presentations as mobile applications. First idea was to create a PDF file and use it in mobile phone, it didn’t work out – it was too slow. Another idea was to convert PDF into SVGs and use them as scenes (slides) a…
Struggle with chaining of promises in react application
JavaScript, React – sending multiple simultaneous ajax calls struggling with promises. Basically I want to chain the calls, if one server call completes then only do next call, and collect the successful response of calls from endpoint /pqr made inside makeServerCalls. Error: expected to return a value …
How to remove ESlint error no-unresolved from importing ‘react’
no-unresolved https://github.com/benmosher/eslint-plugin-import/blob/master/docs/rules/no-unresolved.md After installing eslint-import-resolver-webpack My .eslintrc config My package.json Webpack Answer You can add an option to ignore case: This thread at github also describes how the linter was checking case…
Modifying Shopify Polaris Styles – Reactjs
I am trying to modify Shopify Polaris Button components colors for React, I tried to change style.css file but nothing happened. Any idea how to do so? App.js I am trying to modify node_modules/@shopify/polaris/styles.css , but it does not make ay effect to button color. Answer The Polaris design system is me…
Using Webpack HtmlWebpackPlugin
I am very new to webpack and stuffs, I need a solution to separate base href of index.html and src for bundle.js, for development and production as both are different. For Development base href = localhost src = /bundle.js For Production base href = server url src = /dist/bundle.js To solve the above problem …
Download File automatically with browser that can be opened or read properly
Frontend will send a post request to Scala Play Framework API to download a file. The response header is like : My react js code is as below: It can be downloaded automatically but the file cannot be read. For example, if I download an image, the image cannot be rendered. If I download a zip file, it cannot b…