Selenium nodeJs – How to run webdriver in Chrome?
Login a form Setup nodeJs project Code template – Login a form How to check if form is logged in successfully? Reference Set up a […]
Javascript
JavaScript – Algorithm (1)
Basic – Syntaxes What is “truthy”? What is the difference between null and undefined? null value: null, type: object undefined value: null, type: undefined What’s […]
JavaScript – How to write code cleaner with Async/ Await?
How to use Async/ Await with async function having callback? Not using Async/ Await Using Async/ Await How to use Promise in “reduce”? You have […]
JavaScript – Is Set better than Array?
What are differences between Set and Array? Arrays can have duplicate values but Sets can’t Array is ordered by index. Set uses keys and elements […]
JavaScript – Is Map better than Object?
What are differences between Map and Object? Key in Object must be “String” or “Symbol” whereas Key in Set can be anything To iterate over […]
React Native – How to authenticate with Google account using AWS Cognito? (1)
Create Google app Create Google app to get https://aws-amplify.github.io/docs/js/cognito-hosted-ui-federated-identity#google-sign-in-instructions Notes: Ignore “Restrictions” at the moment Install Amplify into local environment Install AWS Amplify CLI Create […]
ReactJS – How to use ReactJs in existing Cordova app?
Install dependencies React dependencies Cordova webpack plugin Add config files Add file “webpack.config.js” Add .babelrc Add a React component for testing Add react-src/index.js Add react-src/App.js […]
Bitrise – Build iOS app
Upload code signing Upload provisioning profile Provisioning profile is like the certificate of a unique app Provisioning profile has some selected certificates If this is […]
React – Anti-patterns to be avoided
Initializing the state using properties Issues We have a duplicated source of truth because “Props” and “State” hold a similar value. It’s unclear which is […]
React – Performance (2) – Refactor Component
Not using state correctly Investigation The reason for the reduction in performance as soon as the number of items grows is that the list re-renders […]