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<!DOCTYPE html>
<meta charset=utf-8>
<title>EventTarget.dispatchEvent</title>
<link rel="author" title="Olli Pettay" href="mailto:Olli.Pettay@gmail.com">
<link rel="author" title="Ms2ger" href="mailto:Ms2ger@gmail.com">
<link rel="help" href="https://dom.spec.whatwg.org/#dom-eventtarget-dispatchevent">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/dom/nodes/Document-createEvent.js"></script>
<div id="log"></div>
<script>
setup({
"allow_uncaught_exception": true,
})
test(function() {
assert_throws_js(TypeError, function() { document.dispatchEvent(null) })
}, "Calling dispatchEvent(null).")
for (var alias in aliases) {
test(function() {
var e = document.createEvent(alias)
assert_equals(e.type, "", "Event type should be empty string before initialization")
assert_throws_dom("InvalidStateError", function() { document.dispatchEvent(e) })
}, "If the event's initialized flag is not set, an InvalidStateError must be thrown (" + alias + ").")
}
var dispatch_dispatch = async_test("If the event's dispatch flag is set, an InvalidStateError must be thrown.")
dispatch_dispatch.step(function() {
var e = document.createEvent("Event")
e.initEvent("type", false, false)
var target = document.createElement("div")
target.addEventListener("type", dispatch_dispatch.step_func(function() {
assert_throws_dom("InvalidStateError", function() {
target.dispatchEvent(e)
})
assert_throws_dom("InvalidStateError", function() {
document.dispatchEvent(e)
})
}), false)
assert_equals(target.dispatchEvent(e), true, "dispatchEvent must return true")
dispatch_dispatch.done()
})
test(function() {
// https://www.w3.org/Bugs/Public/show_bug.cgi?id=17713
// https://www.w3.org/Bugs/Public/show_bug.cgi?id=17714
var e = document.createEvent("Event")
e.initEvent("type", false, false)
var called = []
var target = document.createElement("div")
target.addEventListener("type", function() {
called.push("First")
throw new Error()
}, false)
target.addEventListener("type", function() {
called.push("Second")
}, false)
assert_equals(target.dispatchEvent(e), true, "dispatchEvent must return true")
assert_array_equals(called, ["First", "Second"],
"Should have continued to call other event listeners")
}, "Exceptions from event listeners must not be propagated.")
async_test(function() {
var results = []
var outerb = document.createElement("b")
var middleb = outerb.appendChild(document.createElement("b"))
var innerb = middleb.appendChild(document.createElement("b"))
outerb.addEventListener("x", this.step_func(function() {
middleb.addEventListener("x", this.step_func(function() {
results.push("middle")
}), true)
results.push("outer")
}), true)
innerb.dispatchEvent(new Event("x"))
assert_array_equals(results, ["outer", "middle"])
this.done()
}, "Event listeners added during dispatch should be called");
async_test(function() {
var results = []
var b = document.createElement("b")
b.addEventListener("x", this.step_func(function() {
results.push(1)
}), true)
b.addEventListener("x", this.step_func(function() {
results.push(2)
}), false)
b.addEventListener("x", this.step_func(function() {
results.push(3)
}), true)
b.dispatchEvent(new Event("x"))
assert_array_equals(results, [1, 3, 2])
this.done()
}, "Capturing event listeners should be called before non-capturing ones")
</script>
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