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import React from 'react'; | |
const higherOrderComponent = (WrappedComponent) => { | |
class HOC extends React.Component { | |
render() { | |
return ( | |
<WrappedComponent | |
secretToLife={42} | |
{...this.props} | |
/>); |
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import React from 'react'; | |
const higherOrderComponent = (WrappedComponent) => { | |
class HOC extends React.Component { | |
render() { | |
return <WrappedComponent />; | |
} | |
} | |
return HOC; |
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<!DOCTYPE html> | |
<html> | |
<head> | |
<meta charset="utf-8"> | |
<title></title> | |
</head> | |
<body> | |
<div>My background color is <span id="background"></span></div> | |
<div id="debugger"> | |
<div> |
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<!DOCTYPE html> | |
<html> | |
<head> | |
<meta charset="utf-8"> | |
<title></title> | |
</head> | |
<body> | |
<div>My background color is <span id="background"></span></div> | |
<div id="debugger"> | |
<div> |
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const timeline = []; | |
let activeItem = 0; | |
const saveTimeline = () => { | |
timeline.push(store.getState()); | |
timelineNode.innerHTML = timeline | |
.map(item => JSON.stringify(item)) | |
.join('<br/>'); | |
activeItem = timeline.length - 1; | |
}; |
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<!DOCTYPE html> | |
<html> | |
<head> | |
<meta charset="utf-8"> | |
<title></title> | |
</head> | |
<body> | |
<div>Random Count: <span id="count"></span></div> | |
<script> | |
const counterNode = document.getElementById('count'); |
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// This will be fed into the reducer when the app loads to initialize the state | |
const getInitialState = () => ({ | |
todoList: [], | |
}); | |
const reducer = (prevState = getInitialState(), action) => { | |
switch (action.type) { | |
case 'ADD_TODO': | |
const nextState = { | |
todoList: [ |
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const createStore = (reducer, initialState) => { | |
const store = {}; | |
store.state = initialState; | |
store.listeners = []; | |
store.getState = () => store.state; | |
store.subscribe = (listener) => { | |
store.listeners.push(listener); | |
}; |
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import * as React from 'react'; | |
import './App.css'; | |
import Description from './Description'; | |
import Header from './Header'; | |
import logo from './logo.svg'; | |
class App extends React.Component { | |
public render() { | |
return ( | |
<div className="App"> |
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import * as React from 'react'; | |
interface IProps { | |
countBy?: number; | |
} | |
interface IState { | |
count: number; | |
} |