-
-
Save moaazsidat/8a0c6d6bc4808387e302 to your computer and use it in GitHub Desktop.
Redux Primer - Counter Example
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
<!DOCTYPE html> | |
<html> | |
<head> | |
<script src="http://fb.me/react-with-addons-0.14.0.js"></script> | |
<script src="http://fb.me/react-dom-0.14.0.js"></script> | |
<!-- <script src="https://npmcdn.com/expect/umd/expect.min.js"></script> --> | |
<script src="https://wzrd.in/standalone/expect@latest"></script> | |
<script src="https://cdnjs.cloudflare.com/ajax/libs/redux/3.3.0/redux.js"></script> | |
<meta charset="utf-8"> | |
<title>React Hello World w/ JSBin</title> | |
<style id="jsbin-css"> | |
* { | |
font-family: sans-serif | |
} | |
</style> | |
</head> | |
<body> | |
<div id="root"></div> | |
<script id="jsbin-javascript"> | |
'use strict'; | |
var counter = function counter(state, action) { | |
if (state === undefined) state = 0; | |
if (typeof state === 'undefined') { | |
return 0; | |
} | |
switch (action.type) { | |
case 'INCREMENT': | |
return state + 1; | |
case 'DECREMENT': | |
return state - 1; | |
default: | |
return state; | |
} | |
}; | |
var _Redux = Redux; | |
var createStore = _Redux.createStore; | |
var store = createStore(counter); | |
var Counter = function Counter(_ref) { | |
var value = _ref.value; | |
var onIncrement = _ref.onIncrement; | |
var onDecrement = _ref.onDecrement; | |
return React.createElement( | |
'div', | |
null, | |
React.createElement( | |
'h1', | |
null, | |
value | |
), | |
React.createElement( | |
'button', | |
{ onClick: onIncrement }, | |
'+' | |
), | |
React.createElement( | |
'button', | |
{ onClick: onDecrement }, | |
'-' | |
) | |
); | |
}; | |
var render = function render() { | |
ReactDOM.render(React.createElement(Counter, { | |
value: store.getState(), | |
onIncrement: function () { | |
return store.dispatch({ | |
type: 'INCREMENT' | |
}); | |
}, | |
onDecrement: function () { | |
return store.dispatch({ | |
type: 'DECREMENT' | |
}); | |
} | |
}), document.getElementById('root')); | |
}; | |
store.subscribe(render); | |
render(); | |
// Tests | |
expect(counter(0, { type: 'INCREMENT' })).toEqual(1); | |
expect(counter(1, { type: 'INCREMENT' })).toEqual(2); | |
expect(counter(1, { type: 'DECREMENT' })).toEqual(0); | |
expect(counter(2, { type: 'DECREMENT' })).toEqual(1); | |
expect(counter(2, { type: 'INCREMENT' })).toEqual(3); | |
expect(counter(undefined, {})).toEqual(0); | |
/* | |
********************************* | |
Store implementation | |
********************************* | |
const createStore = (reducer) => { | |
let state; | |
let listeners = []; | |
const getState = () = state; | |
const dispatch = (action) => { | |
state = reducer(state, action); | |
listeners.forEach(listener => listener()); | |
}; | |
const subscribe = (listener) => { | |
listerners.push(listener); | |
return () => { | |
listeners = listeners.filter(l => l !== listener); | |
} | |
} | |
dispatch({}); | |
} | |
********************************* | |
********************************* | |
*/ | |
</script> | |
<script id="jsbin-source-html" type="text/html"><!DOCTYPE html> | |
<html> | |
<head> | |
<script src="//fb.me/react-with-addons-0.14.0.js"><\/script> | |
<script src="//fb.me/react-dom-0.14.0.js"><\/script> | |
<\!-- <script src="https://npmcdn.com/expect/umd/expect.min.js"><\/script> --> | |
<script src="https://wzrd.in/standalone/expect@latest"><\/script> | |
<script src="https://cdnjs.cloudflare.com/ajax/libs/redux/3.3.0/redux.js"><\/script> | |
<meta charset="utf-8"> | |
<title>React Hello World w/ JSBin</title> | |
</head> | |
<body> | |
<div id="root"></div> | |
</body> | |
</html></script> | |
<script id="jsbin-source-css" type="text/css">* { | |
font-family: sans-serif | |
}</script> | |
<script id="jsbin-source-javascript" type="text/javascript"> | |
const counter = (state = 0, action) => { | |
if (typeof state === 'undefined') { | |
return 0; | |
} | |
switch (action.type) { | |
case 'INCREMENT': | |
return state + 1; | |
case 'DECREMENT': | |
return state - 1; | |
default: | |
return state; | |
} | |
}; | |
const { createStore } = Redux; | |
const store = createStore(counter); | |
const Counter = ({ | |
value, | |
onIncrement, | |
onDecrement | |
}) => ( | |
<div> | |
<h1>{value}</h1> | |
<button onClick={onIncrement}>+</button> | |
<button onClick={onDecrement}>-</button> | |
</div> | |
); | |
const render = () => { | |
ReactDOM.render( | |
<Counter | |
value={store.getState()} | |
onIncrement = {() => | |
store.dispatch({ | |
type:'INCREMENT' | |
}) | |
} | |
onDecrement = {() => | |
store.dispatch({ | |
type:'DECREMENT' | |
}) | |
} | |
/>, | |
document.getElementById('root') | |
); | |
}; | |
store.subscribe(render); | |
render(); | |
// Tests | |
expect( | |
counter(0, { type: 'INCREMENT' }) | |
).toEqual(1); | |
expect( | |
counter(1, { type: 'INCREMENT' }) | |
).toEqual(2); | |
expect( | |
counter(1, { type: 'DECREMENT' }) | |
).toEqual(0); | |
expect( | |
counter(2, { type: 'DECREMENT' }) | |
).toEqual(1); | |
expect( | |
counter(2, { type: 'INCREMENT' }) | |
).toEqual(3); | |
expect( | |
counter(undefined, {}) | |
).toEqual(0); | |
/* | |
********************************* | |
Store implementation | |
********************************* | |
const createStore = (reducer) => { | |
let state; | |
let listeners = []; | |
const getState = () = state; | |
const dispatch = (action) => { | |
state = reducer(state, action); | |
listeners.forEach(listener => listener()); | |
}; | |
const subscribe = (listener) => { | |
listerners.push(listener); | |
return () => { | |
listeners = listeners.filter(l => l !== listener); | |
} | |
} | |
dispatch({}); | |
} | |
********************************* | |
********************************* | |
*/</script></body> | |
</html> |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
'use strict'; | |
var counter = function counter(state, action) { | |
if (state === undefined) state = 0; | |
if (typeof state === 'undefined') { | |
return 0; | |
} | |
switch (action.type) { | |
case 'INCREMENT': | |
return state + 1; | |
case 'DECREMENT': | |
return state - 1; | |
default: | |
return state; | |
} | |
}; | |
var _Redux = Redux; | |
var createStore = _Redux.createStore; | |
var store = createStore(counter); | |
var Counter = function Counter(_ref) { | |
var value = _ref.value; | |
var onIncrement = _ref.onIncrement; | |
var onDecrement = _ref.onDecrement; | |
return React.createElement( | |
'div', | |
null, | |
React.createElement( | |
'h1', | |
null, | |
value | |
), | |
React.createElement( | |
'button', | |
{ onClick: onIncrement }, | |
'+' | |
), | |
React.createElement( | |
'button', | |
{ onClick: onDecrement }, | |
'-' | |
) | |
); | |
}; | |
var render = function render() { | |
ReactDOM.render(React.createElement(Counter, { | |
value: store.getState(), | |
onIncrement: function () { | |
return store.dispatch({ | |
type: 'INCREMENT' | |
}); | |
}, | |
onDecrement: function () { | |
return store.dispatch({ | |
type: 'DECREMENT' | |
}); | |
} | |
}), document.getElementById('root')); | |
}; | |
store.subscribe(render); | |
render(); | |
// Tests | |
expect(counter(0, { type: 'INCREMENT' })).toEqual(1); | |
expect(counter(1, { type: 'INCREMENT' })).toEqual(2); | |
expect(counter(1, { type: 'DECREMENT' })).toEqual(0); | |
expect(counter(2, { type: 'DECREMENT' })).toEqual(1); | |
expect(counter(2, { type: 'INCREMENT' })).toEqual(3); | |
expect(counter(undefined, {})).toEqual(0); | |
/* | |
********************************* | |
Store implementation | |
********************************* | |
const createStore = (reducer) => { | |
let state; | |
let listeners = []; | |
const getState = () = state; | |
const dispatch = (action) => { | |
state = reducer(state, action); | |
listeners.forEach(listener => listener()); | |
}; | |
const subscribe = (listener) => { | |
listerners.push(listener); | |
return () => { | |
listeners = listeners.filter(l => l !== listener); | |
} | |
} | |
dispatch({}); | |
} | |
********************************* | |
********************************* | |
*/ |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment