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JS Bin// source https://jsbin.com/kiqexic = Create Counter App => React + Redux
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <meta name="viewport" content="width=device-width"> | |
| <title>JS Bin</title> | |
| <script src="https://npmcdn.com/expect/umd/expect.min.js"></script> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/redux/3.6.0/redux.js"></script> | |
| <script src="https://unpkg.com/react@15/dist/react.js"></script> | |
| <script src="https://unpkg.com/react-dom@15/dist/react-dom.js"></script> | |
| </head> | |
| <body> | |
| <div id="root"></div> | |
| <script id="jsbin-javascript"> | |
| "use strict"; | |
| var counter = function counter(state, action) { | |
| if (state === undefined) state = 0; | |
| switch (action.type) { | |
| case "INCREMENT": | |
| return state + 1; | |
| case "DECREMENT": | |
| return state - 1; | |
| default: | |
| return state; | |
| } | |
| }; | |
| /* | |
| expect(counter(0, {type: "INCREMENT"})).toEqual(1); | |
| expect(counter(1, {type: "INCREMENT"})).toEqual(2); | |
| expect(counter(2, {type: "DECREMENT"})).toEqual(1); | |
| expect(counter(1, {type: "DECREMENT"})).toEqual(0); | |
| expect(counter(1, {type: "SOMETHING_ELSE"})).toEqual(1); | |
| expect(counter(undefined, {})).toEqual(0); // Test Initial Test | |
| console.log("Test Passed!");*/ | |
| var _Redux = Redux; | |
| var createStore = _Redux.createStore; | |
| /*minimal implementation | |
| function createStore (reducer) { | |
| let state; | |
| let listeners = []; | |
| const getState = () => state; | |
| const dispatch = (action) => { | |
| state = reducer(state, action); | |
| listeners.forEach(listener => listener()); | |
| }; | |
| const subscribe = (listener) => { | |
| listeners.push(listener); | |
| return () => { | |
| listeners = listeners.filter(l => l !== listener); | |
| } | |
| } | |
| dispatch({}); | |
| return {getState, dispatch, subscribe}; | |
| }*/ | |
| var store = createStore(counter); | |
| /*console.log(store.getState()); | |
| store.dispatch({type: "INCREMENT"}); | |
| console.log(store.getState()); | |
| */ | |
| var Counter = function Counter(_ref) { | |
| var value = _ref.value; | |
| var onIncrement = _ref.onIncrement; | |
| var onDecrement = _ref.onDecrement; | |
| return React.createElement( | |
| "div", | |
| null, | |
| React.createElement( | |
| "h1", | |
| null, | |
| value | |
| ), | |
| React.createElement( | |
| "button", | |
| { onClick: onIncrement }, | |
| "+" | |
| ), | |
| React.createElement( | |
| "button", | |
| { onClick: onDecrement }, | |
| "-" | |
| ) | |
| ); | |
| }; | |
| function render() { | |
| ReactDOM.render(React.createElement(Counter, { | |
| value: store.getState(), | |
| onIncrement: store.dispatch.bind(null, { type: "INCREMENT" }), | |
| onDecrement: store.dispatch.bind(null, { type: "DECREMENT" }) | |
| }), document.getElementById("root")); | |
| } | |
| store.subscribe(render); | |
| render(); | |
| </script> | |
| <script id="jsbin-source-javascript" type="text/javascript">const counter = (state = 0, action) => { | |
| switch (action.type) { | |
| case "INCREMENT": | |
| return (state + 1); | |
| case "DECREMENT": | |
| return (state - 1); | |
| default: return state; | |
| } | |
| } | |
| /* | |
| expect(counter(0, {type: "INCREMENT"})).toEqual(1); | |
| expect(counter(1, {type: "INCREMENT"})).toEqual(2); | |
| expect(counter(2, {type: "DECREMENT"})).toEqual(1); | |
| expect(counter(1, {type: "DECREMENT"})).toEqual(0); | |
| expect(counter(1, {type: "SOMETHING_ELSE"})).toEqual(1); | |
| expect(counter(undefined, {})).toEqual(0); // Test Initial Test | |
| console.log("Test Passed!");*/ | |
| const {createStore} = Redux; | |
| /*minimal implementation | |
| function createStore (reducer) { | |
| let state; | |
| let listeners = []; | |
| const getState = () => state; | |
| const dispatch = (action) => { | |
| state = reducer(state, action); | |
| listeners.forEach(listener => listener()); | |
| }; | |
| const subscribe = (listener) => { | |
| listeners.push(listener); | |
| return () => { | |
| listeners = listeners.filter(l => l !== listener); | |
| } | |
| } | |
| dispatch({}); | |
| return {getState, dispatch, subscribe}; | |
| }*/ | |
| const store = createStore(counter); | |
| /*console.log(store.getState()); | |
| store.dispatch({type: "INCREMENT"}); | |
| console.log(store.getState()); | |
| */ | |
| const Counter = ({value, onIncrement, onDecrement}) => { | |
| return ( | |
| <div> | |
| <h1>{value}</h1> | |
| <button onClick={onIncrement}>+</button> | |
| <button onClick={onDecrement}>-</button> | |
| </div> | |
| ); | |
| } | |
| function render () { | |
| ReactDOM.render( | |
| <Counter | |
| value={store.getState()} | |
| onIncrement={store.dispatch.bind(null, {type: "INCREMENT"})} | |
| onDecrement={store.dispatch.bind(null, {type: "DECREMENT"})} | |
| />, | |
| document.getElementById("root") | |
| ); | |
| } | |
| store.subscribe(render); | |
| render (); | |
| </script></body></script> | |
| </html> |
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| "use strict"; | |
| var counter = function counter(state, action) { | |
| if (state === undefined) state = 0; | |
| switch (action.type) { | |
| case "INCREMENT": | |
| return state + 1; | |
| case "DECREMENT": | |
| return state - 1; | |
| default: | |
| return state; | |
| } | |
| }; | |
| /* | |
| expect(counter(0, {type: "INCREMENT"})).toEqual(1); | |
| expect(counter(1, {type: "INCREMENT"})).toEqual(2); | |
| expect(counter(2, {type: "DECREMENT"})).toEqual(1); | |
| expect(counter(1, {type: "DECREMENT"})).toEqual(0); | |
| expect(counter(1, {type: "SOMETHING_ELSE"})).toEqual(1); | |
| expect(counter(undefined, {})).toEqual(0); // Test Initial Test | |
| console.log("Test Passed!");*/ | |
| var _Redux = Redux; | |
| var createStore = _Redux.createStore; | |
| /*minimal implementation | |
| function createStore (reducer) { | |
| let state; | |
| let listeners = []; | |
| const getState = () => state; | |
| const dispatch = (action) => { | |
| state = reducer(state, action); | |
| listeners.forEach(listener => listener()); | |
| }; | |
| const subscribe = (listener) => { | |
| listeners.push(listener); | |
| return () => { | |
| listeners = listeners.filter(l => l !== listener); | |
| } | |
| } | |
| dispatch({}); | |
| return {getState, dispatch, subscribe}; | |
| }*/ | |
| var store = createStore(counter); | |
| /*console.log(store.getState()); | |
| store.dispatch({type: "INCREMENT"}); | |
| console.log(store.getState()); | |
| */ | |
| var Counter = function Counter(_ref) { | |
| var value = _ref.value; | |
| var onIncrement = _ref.onIncrement; | |
| var onDecrement = _ref.onDecrement; | |
| return React.createElement( | |
| "div", | |
| null, | |
| React.createElement( | |
| "h1", | |
| null, | |
| value | |
| ), | |
| React.createElement( | |
| "button", | |
| { onClick: onIncrement }, | |
| "+" | |
| ), | |
| React.createElement( | |
| "button", | |
| { onClick: onDecrement }, | |
| "-" | |
| ) | |
| ); | |
| }; | |
| function render() { | |
| ReactDOM.render(React.createElement(Counter, { | |
| value: store.getState(), | |
| onIncrement: store.dispatch.bind(null, { type: "INCREMENT" }), | |
| onDecrement: store.dispatch.bind(null, { type: "DECREMENT" }) | |
| }), document.getElementById("root")); | |
| } | |
| store.subscribe(render); | |
| render(); |
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