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- <!DOCTYPE html>
- <html>
- <head>
- <link type="text/css" rel="stylesheet" href="styles/stylesheet-problem-7.css"/>
- <link type="image/x-icon" rel="shortcut icon" href="images/favicon.ico"/>
- <title>Calculator</title>
- </head>
- <body>
- <table>
- <thead>
- <div class="display"><input type="text" readonly id="d"></div>
- </thead>
- <tbody class="button">
- <tr>
- <td>
- <button onclick='v("1")'>1</button>
- </td>
- <td>
- <button onclick='v("2")'>2</button>
- </td>
- <td>
- <button onclick='v("3")'>3</button>
- </td>
- <td>
- <button id="plus" onclick='v("+")'>+</button>
- </td>
- </tr>
- <tr>
- <td>
- <button onclick='v("4")'>4</button>
- </td>
- <td>
- <button onclick='v("5")'>5</button>
- </td>
- <td>
- <button onclick='v("6")'>6</button>
- </td>
- <td>
- <button id="minus" onclick='v("-")'>-</button>
- </td>
- </tr>
- <tr>
- <td>
- <button onclick='v("7")'>7</button>
- </td>
- <td>
- <button onclick='v("8")'>8</button>
- </td>
- <td>
- <button onclick='v("9")'>9</button>
- </td>
- <td>
- <button id="multiply" onclick='v("*")'>*</button>
- </td>
- </tr>
- <tr>
- <td>
- <button id="clear" onclick='c("")'>C</button>
- </td>
- <td>
- <button onclick='v("0")'>0</button>
- </td>
- <td>
- <button id="equals" onclick='e()'>=</button>
- </td>
- <td>
- <button id="divide" onclick='v("/")'>/</button>
- </td>
- </tr>
- </tbody>
- <script>
- function c(val) {
- document.getElementById("d").value=val;
- }
- function v(val) {
- document.getElementById("d").value+=val;
- }
- function e() {
- try {
- c(eval(document.getElementById("d").value));
- }
- catch(e) {
- c('Error');
- }
- }
- </script>
- </table>
- </body>
- </html>
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