Document-createElementNS-customized-builtins.html (1993B)
1 <!DOCTYPE html> 2 <title>Custom Elements: document.createElementNS should support custom elements</title> 3 <link rel="help" content="https://dom.spec.whatwg.org/#concept-create-element"> 4 <link rel="help" content="https://dom.spec.whatwg.org/#internal-createelementns-steps"> 5 <script src="/resources/testharness.js"></script> 6 <script src="/resources/testharnessreport.js"></script> 7 <body> 8 <script> 9 test(() => { 10 class MyBuiltinElement extends HTMLElement {}; 11 12 customElements.define('my-builtin', MyBuiltinElement, { extends: 'address' }); 13 let element = document.createElementNS('http://www.w3.org/1999/xhtml', 'p:address', { is: 'my-builtin'}); 14 assert_true(element instanceof MyBuiltinElement); 15 assert_equals(element.prefix, 'p'); 16 assert_false(element.hasAttribute('is')); 17 }, 'builtin: document.createElementNS should create custom elements with prefixes.'); 18 19 test(() => { 20 class MyBuiltinElement2 extends HTMLElement {}; 21 22 customElements.define('my-builtin2', MyBuiltinElement2, { extends: 'address'}); 23 let element = document.createElementNS('urn:example', 'address', { is: 'my-builtin2' }); 24 assert_false(element instanceof MyBuiltinElement2); 25 assert_false(element.hasAttribute('is')); 26 }, 'builtin: document.createElementNS should check namespaces.'); 27 28 test(() => { 29 class SuperP extends HTMLParagraphElement {} 30 customElements.define("super-p", SuperP, { extends: "p" }); 31 32 const superP = document.createElementNS("http://www.w3.org/1999/xhtml", "p", { is: "super-p" }); 33 assert_true(superP instanceof HTMLParagraphElement); 34 assert_true(superP instanceof SuperP); 35 assert_equals(superP.localName, "p"); 36 37 const notSuperP = document.createElementNS("http://www.w3.org/1999/xhtml", "p", "super-p"); 38 assert_true(notSuperP instanceof HTMLParagraphElement); 39 assert_false(notSuperP instanceof SuperP); 40 assert_equals(notSuperP.localName, "p"); 41 }, "document.createElementNS()'s third argument is to be ignored when it's a string"); 42 </script> 43 </body>