| <!DOCTYPE html> |
| <meta charset="utf-8"> |
| <title>CSS.escape() method for ID selectors starting with digits</title> |
| <link rel="help" href="https://drafts.csswg.org/cssom/#the-css.escape()-method"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <!-- regression test for https://github.com/jsdom/jsdom/issues/3919 --> |
| |
| <div id="baz" class="foo"></div> |
| <div id="000" class="foo"></div> |
| |
| <script> |
| "use strict"; |
| |
| const baz = document.getElementById("baz"); |
| const zero = document.getElementById("000"); |
| |
| test(() => { |
| assert_equals(baz, document.querySelector("#baz"), "ID matches"); |
| assert_equals(baz, document.querySelector("#baz.foo"), "ID and class matches"); |
| assert_equals(zero, baz.nextElementSibling, "zero exists next to baz"); |
| assert_throws_dom("SyntaxError", () => document.querySelector("#000"), "Throws for unescaped numeric ID"); |
| }, "Sanity check"); |
| |
| test(() => { |
| assert_equals(zero, document.querySelector(`#${CSS.escape("000")}`), "ID matches"); |
| assert_equals(zero, document.querySelector(`#${CSS.escape("000")}.foo`), "ID and class matches"); |
| }, "ID selector matches with CSS.escape()"); |
| </script> |
