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anteriovieira/index.html

Created April 13, 2017 17:28
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JS Bin // source https://jsbin.com/wufotac
Raw
index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>JS Bin</title>
</head>
<body>
<script id="jsbin-javascript">
// clear console
'use strict';
console.clear();
// reducers
var count = function count(state, action) {
if (state === undefined) state = 0;
switch (action.type) {
case 'ADD':
return state + 1;
default:
return state;
}
};
var log = function log(state, action) {
if (state === undefined) state = 13;
console.log(state, action);
switch (action.type) {
case 'ADD':
return state + 1;
default:
return state;
}
};
// end reducers
var combineReducers = function combineReducers(reducers) {
return function (state, action) {
if (state === undefined) state = {};
return Object.keys(reducers).reduce(function (nextState, key) {
nextState[key] = reducers[key](state[key], action);
return nextState;
}, {});
};
};
var createStore = function createStore(reducer) {
var state = undefined;
var listeners = [];
var getState = function getState() {
return state;
};
var dispatch = function dispatch(action) {
state = reducer(state, action);
listeners.forEach(function (listener) {
return listener();
});
};
var subscribe = function subscribe(listener) {
listeners.push(listener);
return function () {
listeners = listeners.filter(function (l) {
return l !== listener;
});
};
};
dispatch({});
return { getState: getState, dispatch: dispatch, subscribe: subscribe };
};
// Combine reducers
var countApp = combineReducers({
log: log, count: count
});
var store = createStore(countApp);
var render = function render() {
var state = store.getState();
document.body.innerText = state.count + ' => ' + state.log;
};
render();
store.subscribe(render);
document.addEventListener('click', function () {
store.dispatch({ type: 'ADD' });
});
</script>
<script id="jsbin-source-javascript" type="text/javascript">// clear console
console.clear()
// reducers
const count = (state = 0, action) => {
switch (action.type) {
case 'ADD':
return state + 1
default :
return state
}
}
const log = (state = 13, action) => {
console.log(state, action)
switch (action.type) {
case 'ADD':
return state + 1
default :
return state
}
}
// end reducers
const combineReducers = (reducers) => {
return (state = {}, action) => {
return Object.keys(reducers).reduce(
(nextState, key) => {
nextState[key] = reducers[key](
state[key], action
)
return nextState
},
{}
)
}
}
const createStore = (reducer) => {
let state = undefined
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) => {
return l !== listener
})
}
}
dispatch({})
return { getState, dispatch, subscribe }
}
// Combine reducers
const countApp = combineReducers({
log, count
})
const store = createStore(countApp)
const render = () => {
var state = store.getState()
document.body.innerText = state.count + ' => ' + state.log
}
render()
store.subscribe(render)
document.addEventListener('click', () => {
store.dispatch({type: 'ADD'})
})
</script></body>
</html>
Raw
jsbin.wufotac.js
// clear console
'use strict';
console.clear();
// reducers
var count = function count(state, action) {
if (state === undefined) state = 0;
switch (action.type) {
case 'ADD':
return state + 1;
default:
return state;
}
};
var log = function log(state, action) {
if (state === undefined) state = 13;
console.log(state, action);
switch (action.type) {
case 'ADD':
return state + 1;
default:
return state;
}
};
// end reducers
var combineReducers = function combineReducers(reducers) {
return function (state, action) {
if (state === undefined) state = {};
return Object.keys(reducers).reduce(function (nextState, key) {
nextState[key] = reducers[key](state[key], action);
return nextState;
}, {});
};
};
var createStore = function createStore(reducer) {
var state = undefined;
var listeners = [];
var getState = function getState() {
return state;
};
var dispatch = function dispatch(action) {
state = reducer(state, action);
listeners.forEach(function (listener) {
return listener();
});
};
var subscribe = function subscribe(listener) {
listeners.push(listener);
return function () {
listeners = listeners.filter(function (l) {
return l !== listener;
});
};
};
dispatch({});
return { getState: getState, dispatch: dispatch, subscribe: subscribe };
};
// Combine reducers
var countApp = combineReducers({
log: log, count: count
});
var store = createStore(countApp);
var render = function render() {
var state = store.getState();
document.body.innerText = state.count + ' => ' + state.log;
};
render();
store.subscribe(render);
document.addEventListener('click', function () {
store.dispatch({ type: 'ADD' });
});
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