tor-browser

The Tor Browser
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Event-defaultPrevented.html (2482B)

      1 <!doctype html>
      2 <title>Event.defaultPrevented</title>
      3 <script src="/resources/testharness.js"></script>
      4 <script src="/resources/testharnessreport.js"></script>
      5 <div id="log"></div>
      6 <script>
      7 var ev;
      8 test(function() {
      9  ev = document.createEvent("Event");
     10  assert_equals(ev.defaultPrevented, false, "defaultPrevented");
     11 }, "When an event is created, defaultPrevented should be initialized to false.");
     12 test(function() {
     13  ev.initEvent("foo", true, false);
     14  assert_equals(ev.bubbles, true, "bubbles");
     15  assert_equals(ev.cancelable, false, "cancelable");
     16  assert_equals(ev.defaultPrevented, false, "defaultPrevented");
     17 }, "initEvent should work correctly (not cancelable).");
     18 test(function() {
     19  assert_equals(ev.cancelable, false, "cancelable (before)");
     20  ev.preventDefault();
     21  assert_equals(ev.cancelable, false, "cancelable (after)");
     22  assert_equals(ev.defaultPrevented, false, "defaultPrevented");
     23 }, "preventDefault() should not change defaultPrevented if cancelable is false.");
     24 test(function() {
     25  assert_equals(ev.cancelable, false, "cancelable (before)");
     26  ev.returnValue = false;
     27  assert_equals(ev.cancelable, false, "cancelable (after)");
     28  assert_equals(ev.defaultPrevented, false, "defaultPrevented");
     29 }, "returnValue should not change defaultPrevented if cancelable is false.");
     30 test(function() {
     31  ev.initEvent("foo", true, true);
     32  assert_equals(ev.bubbles, true, "bubbles");
     33  assert_equals(ev.cancelable, true, "cancelable");
     34  assert_equals(ev.defaultPrevented, false, "defaultPrevented");
     35 }, "initEvent should work correctly (cancelable).");
     36 test(function() {
     37  assert_equals(ev.cancelable, true, "cancelable (before)");
     38  ev.preventDefault();
     39  assert_equals(ev.cancelable, true, "cancelable (after)");
     40  assert_equals(ev.defaultPrevented, true, "defaultPrevented");
     41 }, "preventDefault() should change defaultPrevented if cancelable is true.");
     42 test(function() {
     43  ev.initEvent("foo", true, true);
     44  assert_equals(ev.cancelable, true, "cancelable (before)");
     45  ev.returnValue = false;
     46  assert_equals(ev.cancelable, true, "cancelable (after)");
     47  assert_equals(ev.defaultPrevented, true, "defaultPrevented");
     48 }, "returnValue should change defaultPrevented if cancelable is true.");
     49 test(function() {
     50  ev.initEvent("foo", true, true);
     51  assert_equals(ev.bubbles, true, "bubbles");
     52  assert_equals(ev.cancelable, true, "cancelable");
     53  assert_equals(ev.defaultPrevented, false, "defaultPrevented");
     54 }, "initEvent should unset defaultPrevented.");
     55 </script>