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@@ -0,0 +1,79 @@
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+function reducer(state, { type, ШО, СКОКА, БАБЛО }) {
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+ if (!state) {
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+ return {
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+ пиво: {
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+ count: 100,
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+ price: 10
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+ },
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+ чипсы: {
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+ count: 100,
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+ price: 10
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+ },
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+ сиги: {
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+ count: 100,
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+ price: 10
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+ },
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+ касса: 0
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+ }
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+ }
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+ if (type === 'КУПИТЬ' && СКОКА <= state[ШО].count && БАБЛО >= state[ШО].price * СКОКА) {
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+ return {
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+ ...state,
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+ касса: state.касса + state[ШО].price * СКОКА,
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+ [ШО]: { ...state[ШО], count: state[ШО].count - СКОКА }
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+ }
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+ }
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+ return state
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+}
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+
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+function createStore(reducer) {
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+ let state = reducer(undefined, {})
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+ let cbs = []
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+
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+ const getState = () => state
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+ const subscribe = cb => (cbs.push(cb),
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+ () => cbs = cbs.filter(c => c !== cb))
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+ const dispatch = action => {
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+ const newState = reducer(state, action)
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+ if (newState !== state) {
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+ state = newState
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+ }
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+ for (let cb of cbs) {
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+ cb()
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+ }
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+ }
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+ return {
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+ getState,
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+ dispatch,
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+ subscribe
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+ }
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+}
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+function createTable(obj) {
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+ table.innerText = ''
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+ for (let [key, value] of Object.entries(obj)) {
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+ let tr = document.createElement('tr');
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+ let td = document.createElement('td');
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+ td.innerText = key
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+ tr.append(td);
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+ table.append(tr);
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+ if (typeof value === 'object') {
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+ for (let [key1, value1] of Object.entries(value)) {
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+ let td = document.createElement('td');
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+ td.innerText = key1 + ' : ' + value1;
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+ tr.append(td);
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+ }
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+ } else {
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+ let td = document.createElement('td');
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+ td.innerText = value;
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+ tr.append(td);
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+ }
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+ }
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+}
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+const store = createStore(reducer);
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+
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+createTable(store.getState())
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+store.subscribe(() => createTable(store.getState()));
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+btn.onclick = (() => store.dispatch({ type: 'КУПИТЬ', ШО: select.value, СКОКА: sum.value, БАБЛО: money.value }))
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+
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+
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+
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