| <!DOCTYPE html> |
| <meta charset="utf-8"> |
| <title>Treatment of various empty-ish script elements</title> |
| <link rel="author" title="Domenic Denicola" href="mailto:d@domenic.me"> |
| <link rel="help" href="https://html.spec.whatwg.org/multipage/#prepare-a-script"> |
| <link rel="help" href="https://html.spec.whatwg.org/multipage/#already-started"> |
| <link rel="help" href="https://github.com/whatwg/html/issues/3419"> |
| |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| |
| <script id="no-children"></script> |
| <script id="whitespace-child"> </script> |
| |
| <script id="gets-a-no-text-child"></script> |
| <script id="gets-an-empty-text-child"></script> |
| <script id="gets-a-text-child"></script> |
| <script id="gets-a-comment-child"></script> |
| <script id="gets-a-text-descendant"></script> |
| |
| <script> |
| "use strict"; |
| |
| test(() => { |
| const el = document.querySelector("#no-children"); |
| el.appendChild(document.createTextNode("window.noChildrenExecuted = true;")); |
| assert_true(window.noChildrenExecuted); |
| }, "A script with no children bails early, before setting already-started, so can be executed when adding text"); |
| |
| test(() => { |
| const el = document.querySelector("#whitespace-child"); |
| el.appendChild(document.createTextNode("window.whitespaceChildExecuted = true;")); |
| assert_equals(window.whitespaceChildExecuted, undefined); |
| }, "A script with a whitespace child executes, setting already-started, so adding text is a no-op"); |
| |
| test(() => { |
| const el = document.querySelector("#gets-a-no-text-child"); |
| el.appendChild(document.createElement("span")); |
| el.appendChild(document.createTextNode("window.getsANoTextChildExecuted = true;")); |
| assert_true(window.getsANoTextChildExecuted); |
| }, "A script with an empty element inserted bails early, before setting already-started, so can be executed when adding text"); |
| |
| test(() => { |
| const el = document.querySelector("#gets-an-empty-text-child"); |
| el.appendChild(document.createTextNode("")); |
| el.appendChild(document.createTextNode("window.getsAnEmptyTextChildExecuted = true;")); |
| assert_true(window.getsAnEmptyTextChildExecuted); |
| }, "A script with an empty text node inserted bails early, before setting already-started, so can be executed when adding text"); |
| |
| test(() => { |
| const el = document.querySelector("#gets-a-text-child"); |
| el.appendChild(document.createTextNode("window.getsATextChildExecuted1 = true;")); |
| el.appendChild(document.createTextNode("window.getsATextChildExecuted2 = true;")); |
| assert_true(window.getsATextChildExecuted1); |
| assert_equals(window.getsATextChildExecuted2, undefined); |
| }, "A script with a text child inserted executes, setting already-started, so adding text is a no-op"); |
| |
| test(() => { |
| const el = document.querySelector("#gets-a-comment-child"); |
| el.appendChild(document.createComment("window.getsACommentChild1 = true;")); |
| el.appendChild(document.createTextNode("window.getsACommentChild2 = true;")); |
| assert_equals(window.getsACommentChild1, undefined); |
| assert_true(window.getsACommentChild2); |
| }, "A script with a comment child inserted bails early, before setting already-started, so can be executed when adding text"); |
| |
| test(() => { |
| const el = document.querySelector("#gets-a-text-descendant"); |
| const child = document.createElement("span"); |
| child.appendChild(document.createTextNode("window.getsATextDescendantExecuted1 = true;")); |
| el.appendChild(child); |
| el.appendChild(document.createTextNode("window.getsATextDescendantExecuted2 = true;")); |
| assert_equals(window.getsATextDescendantExecuted1, undefined); |
| assert_true(window.getsATextDescendantExecuted2); |
| }, "A script with an element containing text inserted bails early, before setting already-started, so can be executed when adding text"); |
| </script> |
