Tag:Higher order

  • Skeleton based spatiotemporal graph routing method for action recognition


    Spatio-Temporal Graph Routing for Skeleton-Based Action Recognition paper: https://www.aaai.org/ojs/index.php/AAAI/article/view/4875/4748 Skeleton based spatiotemporal graph routing method for action recognition Many existing methods usually rely on the physical connectivity of fixed skeleton structure for recognition, which can not capture the intrinsic high-order correlation between skeleton joints. This paper proposes a new skeleton based spatiotemporal graph routing (stgr) […]

  • Eight things you need to know about react before using Redux


    The original text comes fromhttps://www.robinwieruch.de/l…Translator’s note: translation is only for personal learning. Due to my limited level, the translation is full of poor grammar and expression. It’s better to read the original English State management is very complex. The view layer tool library, such as react, allows us to manage state within a component. But […]

  • React learning


    Event system React implements a synthetic event layer based on virtual dom. The processor we defined will receive an instance of synthetic event object, which fully conforms to W3C standard and will not have any ie compatibility problem. It also has the same interface as native browser events and supports event bubbling mechanism. We can […]

  • How to use react hooks in class components


    This is the Seventy-eighth original without water. If you want to get more original and good articles, please search the official account to pay attention to us.How to use react hooks in class components previously on React introduced hook in v16.8.0. As an enhancement of pure function components, it brings state, context and so on […]

  • React advanced use


    Uncontrolled components unavailablesetStateUse uncontrolled components to get the desired results, such as file uploads Portal Function: let the component render outside the parent component Usage scenarios: overflow: hidden Parent componentz-indexThe value is too small fixedPut inbodyThe first level of ReactDOM.createPortal( <div className=”modal”>{this.props.children}</div>, document.body ); Context const ThemeContext = React.createContext(‘light’) <ThemeContext.Provider value={this.state.theme}> <A /> </ThemeContext.Provider> //Class […]

  • React server rendering road 07 — adding CSS Style


    All source code, documents and images are in GitHub’s repository. Click to enter the repository Related reading React server rendering road 01: project infrastructure construction React server rendering road 02 — the simplest server rendering React server rendering road 03 — routing React server rendering road 04 — redux-01 React server rendering road 05 — […]

  • React learning notes


    1、 On react ES6 writing code import React from ‘react’; import ReactDOM from ‘react-dom’; import PropTypes from ‘prop-types’; class App extends React.Component { state = { Title: ‘global big front end’ } render() { const { title } = this.state; const { name } = this.props return ( <div> <h2>{title}</h2> <p> Hello {name}! </p> </div> […]

  • Cannot have two HTML5 backends at the same time


    Cannot have two HTML5 backends at the same time appears when using multiple dndproviders provided by react DND Reason: html5backend has been generated on the same page, and cannot be generated repeatedly Solution: use high-level components to build html5backend Problem address: https://codesandbox.io/s/gs988 [email protected] And above solutions: https://codesandbox.io/s/react-dnd-backend-issue-forked-uyf8z [email protected] The following versions of the solution: https://codesandbox.io/s/react-dnd-backend-issue-forked-bccjz

  • Implementation of a breadcrumb navigation using react high order components


    What is react advanced component The react high-order component is to wrap the react component that needs to be decorated in the way of high-order function, and return the react component after processing. React high-level components are frequently used in the react ecosystem, such asreact-routerMediumwithRouteras well asreact-reduxinconnectMany APIs are implemented in this way. <!– more […]

  • React high order component


    1、 Advanced component Foundation In a word: it is a function that passes in a component and returns a new component. Its function is to enhance the passed in component const lessons = [ {stage: ‘react’, Title: ‘componentized 1’}, {stage: ‘react’, Title: ‘componentized 2’}, {stage: ‘react’, Title: ‘componentized 3’} ]; //Function component function Lesson(props: any) […]

  • The principle of connect and provider of react Redux


    React Redux provides connect and provider to connect react and redux. Connect: used to create a container component, which enablesContainer componentsAccess the store provided by the provider component through context, and pass the state and dispatch returned by mapstatetoprops and mapdispatchtoprops to the UI component. Provider: provide store to sub components through context 1. Use […]

  • About Redux connect


    connect([mapStateToProps], [mapDispatchToProps], [mergeProps],[options]) mapStateToProps mapStateToProps(state, ownProps) : stateProps This function allows us to bind the data in the store to the component as props. const mapStateToProps = (state) => { return { count: state.count } } (1) The first parameter of this function is the store of Redux, from which we extract the count attribute. […]