2017年4月10日月曜日

開発環境

Head First JavaScript Programming (Eric T. Freeman (著)、Elisabeth Robson (著)、O'Reilly Media)の Chapter 4.(Arrays - Putting Some Order in Your Data)、How to iterate over an array の SHARPEN YOUR PENCIL(No. 2573) を取り組んでみる。

SHARPEN YOUR PENCIL(No. 2573)

コード(Emacs)

HTML5

<button id="run0">run</button><button id="clear0">clear</button>
<pre id="output0"></pre>

<script src="sample4.js"></script>

JavaScript

let btn0 = document.querySelector('#run0'),
    btn1 = document.querySelector('#clear0'),
    pre0 = document.querySelector('#output0');

let output = () => {
    let scores = [];

    for (let i = 0; i < 36; i += 1) {
        scores.push(Math.floor(Math.random() * 70));
    }

    let highScore = -1;

    let output;
    scores.forEach((score, i) => {
        output = `Bubble solution #${i} scores: ${scores[i]}\n`;
        pre0.textContent += output;
        if (score > highScore) {
            highScore = score;
        }
    });
    
    pre0.textContent += `Bubbles tests: ${scores.length}\n`;
    pre0.textContent += `Highest bubble score: ${highScore}\n`;
};

btn0.onclick = output;

btn1.onclick = () => {
    pre0.textContent = '';
};

output();



    




 
						

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