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July 3, 2017 15:55
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BASIC REDUX IMPMENTATION // source https://jsbin.com/honisu
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <meta name="viewport" content="width=device-width"> | |
| <title>BASIC REDUX IMPMENTATION</title> | |
| <script src="https://unpkg.com/expect/umd/expect.min.js"></script> | |
| </head> | |
| <body> | |
| <h1>BASIC REDUX IMPMENTATION</h1> | |
| <p>DevTools (F12) -> see the magic</p> | |
| <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; | |
| } | |
| return state; | |
| }; | |
| expect(counter(0, { | |
| type: "INCREMENT" | |
| })).toEqual(1); | |
| expect(counter(1, { | |
| type: "INCREMENT" | |
| })).toEqual(2); | |
| expect(counter(2, { | |
| type: "DECREMENT" | |
| })).toEqual(1); | |
| expect(counter(1, { | |
| type: "DECREMENT" | |
| })).toEqual(0); | |
| expect(counter(1, { | |
| type: "SOMETHING_ELSE" | |
| })).toEqual(1); | |
| console.log("ALL TEST PASSED !!"); | |
| </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; | |
| } | |
| return state; | |
| } | |
| expect( | |
| counter(0, { | |
| type: "INCREMENT" | |
| }) | |
| ).toEqual(1) | |
| expect( | |
| counter(1, { | |
| type: "INCREMENT" | |
| }) | |
| ).toEqual(2) | |
| expect( | |
| counter(2, { | |
| type: "DECREMENT" | |
| }) | |
| ).toEqual(1) | |
| expect( | |
| counter(1, { | |
| type: "DECREMENT" | |
| }) | |
| ).toEqual(0) | |
| expect( | |
| counter(1, { | |
| type: "SOMETHING_ELSE" | |
| }) | |
| ).toEqual(1) | |
| console.log("ALL TEST PASSED !!")</script></body> | |
| </html> |
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| "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; | |
| } | |
| return state; | |
| }; | |
| expect(counter(0, { | |
| type: "INCREMENT" | |
| })).toEqual(1); | |
| expect(counter(1, { | |
| type: "INCREMENT" | |
| })).toEqual(2); | |
| expect(counter(2, { | |
| type: "DECREMENT" | |
| })).toEqual(1); | |
| expect(counter(1, { | |
| type: "DECREMENT" | |
| })).toEqual(0); | |
| expect(counter(1, { | |
| type: "SOMETHING_ELSE" | |
| })).toEqual(1); | |
| console.log("ALL TEST PASSED !!"); |
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