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<!doctype html>
<html>
<head>
<title>window.onerror: runtime scripterrors</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<!--
https://html.spec.whatwg.org/multipage/#runtime-script-errors
says what to do for uncaught runtime script errors, and just below
describes what to do when onerror is a Function.
-->
</head>
<body>
<div id="log"></div>
<script>
setup({allow_uncaught_exception:true});
var error_count = 0;
window.onerror = function(msg, url, lineno) {
++error_count;
};
</script>
<script>
try {
// This error is caught, so it should NOT trigger onerror.
throw "foo";
} catch (ex) {
}
// This error is NOT caught, so it should trigger onerror.
throw "bar";
</script>
<script>
test(function() {assert_equals(error_count, 1)},
"correct number of calls to window.onerror");
</script>
</body>
</html>
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