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1 <!DOCTYPE html> |
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2 <html> |
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3 <head> |
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4 <style type="text/css"> |
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5 |
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6 #c3, #c4 { |
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7 display: none; |
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8 } |
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9 |
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10 input:checked + label { |
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11 background-color: yellow; |
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12 } |
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13 |
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14 </style> |
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15 |
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16 <script type="text/javascript"> |
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17 |
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18 function toggleAllCheckboxes() |
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19 { |
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20 for (var i = 1; i <= 4; ++i) { |
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21 var cb = document.getElementById('c'+i); |
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22 cb.checked = !cb.checked; |
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23 } |
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24 } |
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25 |
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26 </script> |
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27 </head> |
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28 |
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29 <body onload="toggleAllCheckboxes();"> |
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30 |
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31 <div><input type="checkbox" name="test" id="c1"><label for="c1">check #c1</label></div> |
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32 <div><input type="checkbox" name="test" id="c2" checked><label for="c2">check #c2</label></div> |
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33 <div><input type="checkbox" name="test" id="c3"><label for="c3">check #c3</label></div> |
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34 <div><input type="checkbox" name="test" id="c4" checked><label for="c4">check #c4</label></div> |
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35 |
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36 </body> |
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37 </html> |