Setting up React.js Project with Redux in CodePen

CodePen Project: https://codepen.io/heretse/pen/xxabPJE

Pen Settings for JS

JavaScript Preprocessor

• Babel

Add External Scripts/Pens

• react
• react-dom
• redux
• react-redux

Pen Code

HTML Code:

<div id="root"></div>

CSS Code:

/**
 * Credit
 * counter desgin is from dribbble (https://dribbble.com/shots/5539678-Stepper-VI)
 * chevron icons are from font-awesome (https://fontawesome.com/icons/chevron-down?style=solid)
**/
html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
  width: 100%;
  background-color: #f4723a;
  display: flex;
  align-items: center;
  justify-content: center;
}

.container {
  display: flex;
  align-items: center;
  flex-direction: column;
}

.number {
  font-size: 72px;
  color: #e8e8e8;
  font-family: Verdana;
  line-height: 1.75em;
  text-align: center;
  user-select: none;
}

.chevron {
  background: transparent center center;
  background-repeat: no-repeat;
  cursor: pointer;
  width: 70px;
  height: 70px;
  transition: background-image 0.3s;
}

.chevron-up {
  background-image: url("data:image/svg+xml, %3Csvg aria-hidden='true' focusable='false' role='img' xmlns='http://www.w3.org/2000/svg' viewBox='0 0 448 512'%3E%3Cpath fill='%23f6909c' d='M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z'%3E%3C/path%3E%3C/svg%3E");
}

.chevron-up:hover {
  background-image: url("data:image/svg+xml, %3Csvg aria-hidden='true' focusable='false' role='img' xmlns='http://www.w3.org/2000/svg' viewBox='0 0 448 512'%3E%3Cpath fill='%23f5b7b7' d='M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z'%3E%3C/path%3E%3C/svg%3E");
}

.chevron-down {
  background-image: url("data:image/svg+xml,%3Csvg aria-hidden='true' focusable='false' xmlns='http://www.w3.org/2000/svg' viewBox='0 0 448 512'%3E%3Cpath fill='%23f6909c' d='M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z'%3E%3C/path%3E%3C/svg%3E");
}

.chevron-down:hover {
  background-image: url("data:image/svg+xml,%3Csvg aria-hidden='true' focusable='false' xmlns='http://www.w3.org/2000/svg' viewBox='0 0 448 512'%3E%3Cpath fill='%23f5b7b7' d='M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z'%3E%3C/path%3E%3C/svg%3E");
}

.visibility-hidden {
  visibility: hidden;
}

JS Code:

// action
const increment = () => ({ type: "INCREMENT" });
const decrement = () => ({ type: "DECREMENT" });

// reducers
const initialState = { count: 0 };
const counterReducer = (state = initialState, action) => {
  switch (action.type) {
    case "INCREMENT":
      return { ...state, count: state.count + 1 };
    case "DECREMENT":
      return { ...state, count: state.count - 1 };
    default:
      return state;
  }
};

// store
const { createStore } = Redux;
const { Provider, useSelector, useDispatch } = ReactRedux;

const store = createStore(counterReducer);

const Counter = () => {
  const count = useSelector((state) => state.count);
  const dispatch = useDispatch();

  const handleIncrement = () => {
    dispatch(increment());
  };

  const handleDecrement = () => {
    dispatch(decrement());
  };

  return (
    <div className="container">
      <div className={`chevron chevron-up ${count >= 10 && "visibility-hidden"}`} onClick={handleIncrement}></div>
      <div className="number">{count} </div>
      <div className={`chevron chevron-down ${count <= 0 && "visibility-hidden"}`} onClick={handleDecrement}></div>
    </div>
  );
};

const rootNode = document.getElementById("root");
const root = ReactDOM.createRoot(rootNode);

root.render(
  <Provider store={store}>
    <div style={{ display: "flex", justifyContent: "space-between" }}>
      <Counter />
    </div>
  </Provider>
);

The results:

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