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## to Scrabble Score in the JavaScript Track

Published at Oct 21 2020 · 0 comments
Instructions
Test suite
Solution

Given a word, compute the scrabble score for that word.

## Letter Values

You'll need these:

``````Letter                           Value
A, E, I, O, U, L, N, R, S, T       1
D, G                               2
B, C, M, P                         3
F, H, V, W, Y                      4
K                                  5
J, X                               8
Q, Z                               10
``````

## Examples

"cabbage" should be scored as worth 14 points:

• 3 points for C
• 1 point for A, twice
• 3 points for B, twice
• 2 points for G
• 1 point for E

And to total:

• `3 + 2*1 + 2*3 + 2 + 1`
• = `3 + 2 + 6 + 3`
• = `5 + 9`
• = 14

## Extensions

• You can play a double or a triple letter.
• You can play a double or a triple word.

## Setup

Go through the setup instructions for Javascript to install the necessary dependencies:

https://exercism.io/tracks/javascript/installation

## Requirements

Please `cd` into exercise directory before running all below commands.

Install assignment dependencies:

``````\$ npm install
``````

## Making the test suite pass

Execute the tests with:

``````\$ npm test
``````

In the test suites all tests but the first have been skipped.

Once you get a test passing, you can enable the next one by changing `xtest` to `test`.

## Submitting Solutions

Once you have a solution ready, you can submit it using:

``````exercism submit scrabble-score.js
``````

## Submitting Incomplete Solutions

It's possible to submit an incomplete solution so you can see how others have completed the exercise.

## Exercise Source Credits

Inspired by the Extreme Startup game https://github.com/rchatley/extreme_startup

### scrabble-score.spec.js

``````import { score } from './scrabble-score';

describe('Scrabble', () => {
test('lowercase letter', () => {
expect(score('a')).toEqual(1);
});

xtest('uppercase letter', () => {
expect(score('A')).toEqual(1);
});

xtest('valuable letter', () => {
expect(score('f')).toEqual(4);
});

xtest('short word', () => {
expect(score('at')).toEqual(2);
});

xtest('short, valuable word', () => {
expect(score('zoo')).toEqual(12);
});

xtest('medium word', () => {
expect(score('street')).toEqual(6);
});

xtest('medium, valuable word', () => {
expect(score('quirky')).toEqual(22);
});

xtest('long, mixed-case word', () => {
expect(score('OxyphenButazone')).toEqual(41);
});

xtest('english-like word', () => {
expect(score('pinata')).toEqual(8);
});

xtest('empty input', () => {
expect(score('')).toEqual(0);
});

xtest('entire alphabet available', () => {
expect(score('abcdefghijklmnopqrstuvwxyz')).toEqual(87);
});
});``````
``````//
// This is only a SKELETON file for the 'Scrabble Score' exercise. It's been provided as a
// convenience to get you started writing code faster.
//

const letters = {
a: 1,
b: 3,
c: 3,
d: 2,
e: 1,
f: 4,
g: 2,
h: 4,
i: 1,
j: 8,
k: 5,
l: 1,
m: 3,
n: 1,
o: 1,
p: 3,
q: 10,
r: 1,
s: 1,
t: 1,
u: 1,
v: 4,
w: 4,
x: 8,
y: 4,
z: 10
};

export const score = (word) => {
if (word === '') {
return 0;
} else {
let lowerWord = word.toLowerCase();
let result = 0;
[...lowerWord].forEach(letter => result += letters[letter]);
return result;
}
};``````