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A web page showcasing simple flipping of binary bits and the numerical representation of that byte
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>Bits and bytes</title> | |
| <meta charset="utf-8"> | |
| <style type="text/css"> | |
| #form input { | |
| width:1em; | |
| } | |
| td { | |
| text-align:center; | |
| } | |
| form { | |
| width:14em; | |
| } | |
| #sum {float:right;} | |
| input[type="checkbox"] { | |
| display:none; | |
| } | |
| input[type="checkbox"] + label:before { | |
| display:inline-block; | |
| width:1em; height:1em; | |
| border:1px solid #eee; | |
| text-align:center; | |
| content:'\00a0'; | |
| } | |
| input[type="checkbox"]:checked + label:before { | |
| content:'I'; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <header> | |
| <h1>Bit Flipping</h1> | |
| </header> | |
| <article> | |
| <form id="form"> | |
| <table> | |
| <tr><td>8</td><td>7</td><td>6</td><td>5</td><td>4</td><td>3</td><td>2</td><td>1</td><td></td></tr> | |
| <tr> | |
| <td><input type="checkbox" name="bits" id="c0"><label for="c0"></label></td> | |
| <td><input type="checkbox" name="bits" id="c1"><label for="c1"></label></td> | |
| <td><input type="checkbox" name="bits" id="c2"><label for="c2"></label></td> | |
| <td><input type="checkbox" name="bits" id="c3"><label for="c3"></label></td> | |
| <td><input type="checkbox" name="bits" id="c4"><label for="c4"></label></td> | |
| <td><input type="checkbox" name="bits" id="c5"><label for="c5"></label></td> | |
| <td><input type="checkbox" name="bits" id="c6"><label for="c6"></label></td> | |
| <td><input type="checkbox" name="bits" id="c7"><label for="c7"></label></td> | |
| <td id="publish">0</td> | |
| </tr> | |
| <tr><td>128</td><td>64</td><td>32</td><td>16</td><td>8</td><td>4</td><td>2</td><td>1</td><td></td></tr> | |
| </table> | |
| </form> | |
| </article> | |
| </body> | |
| <script> | |
| form.addEventListener('click', function () { | |
| var sum=0; | |
| var bitValues=[128, 64, 32, 16, 8, 4, 2, 1]; | |
| for (var i=0; i < form.bits.length; i++) { | |
| if (form.bits[i].checked==true) { | |
| sum+=bitValues[i]; | |
| } | |
| } | |
| publish.innerHTML=sum; | |
| }); | |
| </script> | |
| </html> |
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