test_bug656954.html (1114B)
1 <!DOCTYPE HTML> 2 <html> 3 <!-- 4 https://bugzilla.mozilla.org/show_bug.cgi?id=656954 5 --> 6 <head> 7 <title>Test for Bug 656954</title> 8 <script src="/tests/SimpleTest/SimpleTest.js"></script> 9 <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/> 10 </head> 11 <body> 12 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=656954">Mozilla Bug 656954</a> 13 <p id="display"></p> 14 <div id="content" style="display: none"> 15 16 </div> 17 <pre id="test"> 18 <script type="application/javascript"> 19 20 /** Test for Bug 656954 */ 21 22 var e = document.createEvent("Event"); 23 is(e.defaultPrevented, false, 24 "After creating event defaultPrevented should be false"); 25 e.initEvent("foo", true, true); 26 var el = document.createElement("div"); 27 el.addEventListener("foo", 28 function(evt) { 29 evt.preventDefault(); 30 }); 31 el.dispatchEvent(e); 32 is(e.defaultPrevented, true, "preventDefault() should have been called!"); 33 34 e = document.createEvent("Event"); 35 e.initEvent("foo", true, false); 36 el.dispatchEvent(e); 37 is(e.defaultPrevented, false, "preventDefault() should not have any effect!"); 38 39 </script> 40 </pre> 41 </body> 42 </html>