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Mobile Phones/Cell Phones is the fundamental element in every moment or second in our life. But this most useable phone has some health effect that are...
Read articleProgramming languages are the foundation of software development and computer science. They provide a medium through which humans can instruct machines to perform specific tasks. Here’s...
Read articleAnd note some fundamentals of Promise – When you create a new Promise, you’re really just creating a plain old JavaScript object. This object can invoke...
Read articleThis tutorial teaches FIWARE users how to alter the context programmatically. The tutorial builds on the entities created in the previous stock management example and enables a user...
Read articleIn this file, you will write the functions that dispatch an action. These functions will be linked to your component props by the container’s mapDispatchToProps function....
Read articleA lifecycle hook that is called after Angular has fully initialized a component’s view. Define an ngAfterViewInit() method to handle any additional initialization tasks. interface AfterViewInit...
Read articleAggregation in MongoDB is nothing but an operation used to process the data that returns the computed results. Aggregation basically groups the data from multiple documents...
Read articleFiber, the new React reconciliation algorithm, has the ability to start and stop rendering as needed for performance benefits. One of the trade-offs of this is...
Read articleFirst a re-cap of the basic CSS Chain/Descendant Selector 1> Chain Selectors – https://stackoverflow.com/questions/13444647/css-class-definition-with-multiple-identifiers .class1.class2 will match only the elements that have both of the classes defined....
Read articleBasically, the Company asked to create an Android “screen” that would allow a user to enter and submit the following data from an American Express, Discover,...
Read articleAccording to original Documentation the pipable operator is that function take observables as a input and it returns another observable .previous observable stays unmodified. pipe(...fns: UnaryFunction<any,...
Read articleOne of the main goals of Angular is to help the developer create reusable and composable components. I think ng-content is one of the simplest ways...
Read articleCompose is used when you want to pass multiple store enhancers to the store. Store enhancers are higher order functions that add some extra functionality to...
Read articleOne of the crucial thing in Redux is binding the action creators to dispatch. Without this binding firing an action creator will do nothing. Now mapDispatchToProps is not...
Read articlePayload is a non-official, community accepted (de facto) naming convention for the property that holds the actual data in a Redux action object. The official documentation...
Read articleWhy enclose actions returned by Redux action creators in curly braces? 1> https://medium.com/@leannezhang/curly-braces-versus-parenthesis-in-reactjs-4d3ffd33128f Curly braces { } are special syntax in JSX. It is used to evaluate...
Read articleReducers – Absolute Basic Reducer is just a function that takes two arguments A) Action (which is just a plain JS object preferably with type property...
Read articleIf we want to link our React application with the redux store, we first have to let our app know that this store exists. This is...
Read articleConnects a React component to a Redux store. The first argument to connect is mapStateToProps() function. What mapStateToProps() does is, it allows us to take our...
Read articleIn this file, you will write the functions that dispatch an action. These functions will be linked to your component props by the container’s mapDispatchToProps function....
Read articleState is used internally by components to dynamically change data. Unlike props, state can only be set within the component itself. Unlike props, state is a...
Read articleThe first thing React will do when setState is called is merge the object you passed into setState into the current state of the component. This...
Read articleServer-side rendering (SSR) typically improves SEO and performance. Server Side Rendering, also called SSR, is the ability of a JavaScript application to render on the server...
Read articleWhen simply adding React to a normal .html file and running tha .html file directly in Chrome will throw cross-origin error. So, I have run this...
Read articleReact Hot Loader is a plugin that allows React components to be live reloaded without the loss of state. It works with Webpack and other bundlers...
Read articlePURE COMPONENT is one of the most significant ways to optimize React applications. The usage of Pure Component gives a considerable increase in performance because it...
Read articleGenerally people think, an easy way to optimize a React component for performance is to make it a class, and make it extend React.PureComponent instead of...
Read articleReact uses synthetic events to handle events from button, input and form elements. A synthetic event is a shell around the native DOM event with additional...
Read articleWe need a way for the child component to tell the parent component to update without breaking one-way data flow. Since we are using local state,...
Read articleIf you need to pass a prop to a component being rendered by React Router, instead of using Routes component prop, use its render prop passing...
Read articleThe onchange event occurs when the value of an element has been changed. For radiobuttons and checkboxes, the onchange event occurs when the checked state...
Read articleWe’ve all been taught that the constructor is where we initialize our instance properties, state in this case. And thats true till ES-6. However, that is...
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