Created
March 20, 2016 20:18
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JS Bin // source http://jsbin.com/kiguhat
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<!DOCTYPE html> | |
<html> | |
<head> | |
<script src="https://fb.me/react-0.14.7.min.js"></script> | |
<script src="https://fb.me/react-dom-0.14.7.min.js"></script> | |
<script src="https://npmcdn.com/expect/umd/expect.min.js"></script> | |
<script src="https://cdnjs.cloudflare.com/ajax/libs/redux/3.3.1/redux.min.js"></script> | |
<meta charset="utf-8"> | |
<meta name="viewport" content="width=device-width"> | |
<title>JS Bin</title> | |
</head> | |
<body> | |
<script id="jsbin-javascript"> | |
'use strict'; | |
var counter = function counter(state, action) { | |
if (state === undefined) state = 0; | |
switch (action.type) { | |
case 'INCREMENT': | |
return state + 1; | |
case 'DECREMENT': | |
return state - 1; | |
default: | |
return state; | |
} | |
}; | |
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 }; | |
}; | |
var store = createStore(counter); | |
var render = function render() { | |
document.body.innerText = store.getState(); | |
}; | |
store.subscribe(render); | |
render(); | |
document.addEventListener('click', function () { | |
store.dispatch({ type: 'INCREMENT' }); | |
}); | |
</script> | |
<script id="jsbin-source-javascript" type="text/javascript">const counter = (state = 0, action) => { | |
switch (action.type) { | |
case 'INCREMENT': | |
return state + 1; | |
case 'DECREMENT': | |
return state - 1; | |
default: | |
return state; | |
} | |
}; | |
const createStore = (reducer) => { | |
let state; | |
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 => (l !== listener)); | |
}; | |
}; | |
dispatch({}); | |
return { getState, dispatch, subscribe }; | |
}; | |
const store = createStore(counter); | |
const render = () => { | |
document.body.innerText = store.getState(); | |
}; | |
store.subscribe(render); | |
render(); | |
document.addEventListener('click', () => { | |
store.dispatch({ type: 'INCREMENT' }); | |
});</script></body> | |
</html> |
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Learn more about bidirectional Unicode characters
'use strict'; | |
var counter = function counter(state, action) { | |
if (state === undefined) state = 0; | |
switch (action.type) { | |
case 'INCREMENT': | |
return state + 1; | |
case 'DECREMENT': | |
return state - 1; | |
default: | |
return state; | |
} | |
}; | |
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 }; | |
}; | |
var store = createStore(counter); | |
var render = function render() { | |
document.body.innerText = store.getState(); | |
}; | |
store.subscribe(render); | |
render(); | |
document.addEventListener('click', function () { | |
store.dispatch({ type: 'INCREMENT' }); | |
}); |
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