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46 lines
1.1 KiB
HTML
46 lines
1.1 KiB
HTML
<!doctype html>
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<meta charset=utf-8>
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<title>Deleting properties from HTMLCollection</title>
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<script src=/resources/testharness.js></script>
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<script src=/resources/testharnessreport.js></script>
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<div id=log></div>
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<i id=foo></i>
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<script>
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let c, expected;
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setup(() => {
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// These might be cached anyway, so explicitly use a single object.
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c = document.getElementsByTagName("i");
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expected = document.getElementById("foo");
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});
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test(() => {
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assert_equals(c[0], expected, "before");
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delete c[0];
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assert_equals(c[0], expected, "after");
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}, "Loose id");
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test(() => {
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assert_equals(c[0], expected, "before");
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assert_throws_js(TypeError, function() {
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"use strict";
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delete c[0];
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});
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assert_equals(c[0], expected, "after");
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}, "Strict id");
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test(() => {
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assert_equals(c.foo, expected, "before");
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delete c.foo;
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assert_equals(c.foo, expected, "after");
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}, "Loose name");
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test(() => {
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assert_equals(c.foo, expected, "before");
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assert_throws_js(TypeError, function() {
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"use strict";
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delete c.foo;
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});
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assert_equals(c.foo, expected, "after");
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}, "Strict name");
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</script>
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