redux-tutorial-example/with-redux.html at master · egoing/redux-tutorial-example · GitHub

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<!DOCTYPE html>
<html>

<head>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/redux/4.0.1/redux.js"></script>
</head>

<body>
    <style>
        .container {
            border: 5px solid black;
            padding: 1rem;
            margin-bottom:1rem;
        }
        body{
            margin:1rem;
        }
    </style>
    <h1>With redux</h1>
    <div id="red"></div>
    <div id="blue"></div>
    <div id="green"></div>
    <script>
function reducer(state, action){
    if(state === undefined){
        return {color:'yellow'}
    }
    var newState;
    if(action.type === 'CHANGE_COLOR'){
        newState = Object.assign({}, state, {color:action.color});
    }
    console.log(action.type, action, state, newState);
    return newState;
}
var store = Redux.createStore(
    reducer,
    window.__REDUX_DEVTOOLS_EXTENSION__ && window.__REDUX_DEVTOOLS_EXTENSION__()
);
function red() {
    var state = store.getState();
    document.querySelector('#red').innerHTML = `
        <div class="container" id="component_red" style="background-color:${state.color}">
            <h1>red</h1>
            <input type="button" value="fire" onclick="
                store.dispatch({type:'CHANGE_COLOR', color:'red'});
            ">
        </div>
    `;
}
store.subscribe(red);
red();

function blue() {
    var state = store.getState();
    document.querySelector('#blue').innerHTML = `
        <div class="container" id="component_blue" style="background-color:${state.color}">
            <h1>blue</h1>
            <input type="button" value="fire" onclick="
                store.dispatch({type:'CHANGE_COLOR', color:'blue'});
            ">
        </div>
    `;
}
store.subscribe(blue);
blue();

function green() {
    var state = store.getState();
    document.querySelector('#green').innerHTML = `
        <div class="container" id="component_green" style="background-color:${state.color}">
            <h1>green</h1>
            <input type="button" value="fire" onclick="
                store.dispatch({type:'CHANGE_COLOR', color:'green'});
            ">
        </div>
    `;
}
store.subscribe(green);
green();

    </script>
</body>

</html>