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Refactor to arrow functions
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>GoCode</title> | |
| <script src="https://unpkg.com/redux@latest/dist/redux.min.js"></script> | |
| </head> | |
| <body> | |
| <div> | |
| <p> | |
| Counter: <span id="value">0</span> times | |
| <button id="increment">+</button> | |
| <button id="decrement">-</button> | |
| <button id="incrementIfOdd">Increment if odd</button> | |
| <button id="incrementAsync">Increment async</button> | |
| </p> | |
| </div> | |
| <script> | |
| function counter(state = 0, action) { | |
| switch (action.type) { | |
| case "INCREMENT": | |
| return state + 1; | |
| case "DECREMENT": | |
| return state - 1; | |
| default: | |
| return state; | |
| } | |
| } | |
| const store = Redux.createStore(counter); | |
| function render() { | |
| const valueEl = document.getElementById("value"); | |
| valueEl.innerHTML = store.getState().toString(); | |
| } | |
| render(); | |
| store.subscribe(render); | |
| document.getElementById("increment").addEventListener("click", () => { | |
| store.dispatch({ type: "INCREMENT" }); | |
| }); | |
| document | |
| .getElementById("decrement") | |
| .addEventListener("click", () => store.dispatch({ type: "DECREMENT" })); | |
| document | |
| .getElementById("incrementIfOdd") | |
| .addEventListener("click", () => { | |
| if (store.getState() % 2 !== 0) { | |
| store.dispatch({ type: "INCREMENT" }); | |
| } | |
| }); | |
| document | |
| .getElementById("incrementAsync") | |
| .addEventListener("click", () => | |
| setTimeout(() => store.dispatch({ type: "INCREMENT" }), 1000) | |
| ); | |
| </script> | |
| </body> | |
| </html> |
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