chromium/third_party/blink/web_tests/external/wpt/html/webappapis/scripting/events/event-handler-javascript.html

<!DOCTYPE html>
<title>Event handler with labels</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body onload="javascript:
  for (var i = 0; i < 2; ++i) {
    for (var j = 0; j < 2; ++j) {
      t.step(function() {
        assert_equals(i, 0);
        assert_equals(j, 0);
      });
      break javascript;
    }
  }
  t.done();
">
<div id="log"></div>
<script>
var t = async_test("Event handlers starting with 'javascript:' should treat that as a label.");
</script>