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1 <!DOCTYPE html> | |
2 <html> | |
3 <style> | |
4 input { color: green; } | |
5 input.notdefault:default { color: red; } | |
6 input.default:not(:default) { color: red; } | |
7 </style> | |
8 <body> | |
9 <form id="one"></form> | |
10 <input type="submit" form="one" class="default" id="test"> | |
11 <form id="two"> | |
12 <input type="submit" class="notdefault"> | |
13 </form> | |
14 <script> | |
15 document.body.offsetWidth; | |
16 document.getElementById("test").setAttribute("form", "two"); | |
17 </script> | |
18 </body> | |
19 </html> |