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いつものことですが、JavaScriptのプロフェッショナルではないので参考程度でお願いしますｗ
なんかおかしいところがあればコメントで教えてください
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<div id="calc"> <p id="value">0</p> <button onclick="del()"><</button> <button onclick="c()">C</button> <button onclick="ac()">AC</button> <button onclick="push('/')">/</button> <br> <button onclick="push('7')">7</button> <button onclick="push('8')">8</button> <button onclick="push('9')">9</button> <button onclick="push('*')">*</button> <br> <button onclick="push('4')">4</button> <button onclick="push('5')">5</button> <button onclick="push('6')">6</button> <button onclick="push('-')">-</button> <br> <button onclick="push('1')">1</button> <button onclick="push('2')">2</button> <button onclick="push('3')">3</button> <button onclick="push('+')">+</button> <br> <button onclick="push('0')">0</button> <button onclick="push('00')">00</button> <button onclick="push('.')">.</button> <button onclick="eq()">=</button> </div> <script> var value = 0; var symbol = ""; var buf = ""; var do_clear = false; function push(str) { if(do_clear) { symbol = buf = ""; do_clear = false; } if (str === '+' || str === '-' || str === '*' || str === '/') { if(buf) eq(true); symbol = str; } else { buf += str; document.getElementById('value').innerText = buf; } } function eq(do_clear_immediately = false) { if (symbol === "") { value = Number(buf); } else if (symbol === '+') { value += Number(buf); } else if (symbol === '-') { value -= Number(buf); } else if (symbol === '*') { value *= Number(buf); } else if (symbol === '/') { value /= Number(buf); } if(do_clear_immediately) symbol = buf = ""; else do_clear = true; document.getElementById('value').innerText = String(value); } function del() { if(do_clear) { symbol = ""; buf = String(value); do_clear = false; } buf = buf.substr(0, buf.length - 1); document.getElementById('value').innerText = buf ? buf : 0; } function c() { buf = ""; document.getElementById('value').innerText = "0"; } function ac() { value = 0; symbol = buf = ""; document.getElementById('value').innerText = "0"; } </script> <style> #value { font-size: 32px; } #calc button { width: 64px; height: 32px; margin: 2px; } #calc { border: 1px solid black; width: 320px; padding: 10px; } </style> |
created by Rinker
¥1,998
(2019/01/15 01:48:08時点 Amazon調べ-詳細)
created by Rinker
¥2,678
(2019/01/15 01:48:08時点 Amazon調べ-詳細)
これからの努力に期待しておるぞ
精進せえ
真面目な返答を求めてるのか面白い返しを求めてるのかよくわからんコメントありがとう