| <!DOCTYPE html> |
| <meta charset=utf-8> |
| <title>text field selection (textarea)</title> |
| <link rel="author" title="Denis Ah-Kang" href="mailto:denis@w3.org"> |
| <link rel=help href="https://html.spec.whatwg.org/multipage/#textFieldSelection"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <div id="log"></div> |
| <script> |
| test(function() { |
| var el = document.createElement("textarea"); |
| assert_equals(el.selectionStart, 0, "initial selectionStart"); |
| assert_equals(el.selectionEnd, 0, "initial selectionEnd"); |
| // The initial selection direction must be "none" if the platform supports that |
| // direction, or "forward" otherwise. |
| assert_in_array(el.selectionDirection, ["none", "forward"]); |
| |
| const initialDirection = el.selectionDirection; |
| el.selectionDirection = "none"; |
| assert_equals(el.selectionDirection, initialDirection); |
| |
| el.value = "foo"; |
| el.selectionStart = 1; |
| el.selectionEnd = 1; |
| el.selectionDirection = "forward"; |
| assert_equals(el.selectionStart, 1, "updated selectionStart"); |
| assert_equals(el.selectionEnd, 1, "updated selectionEnd"); |
| assert_equals(el.selectionDirection, "forward", "updated selectionDirection"); |
| |
| el.setRangeText("foobar"); |
| el.setSelectionRange(0, 1); |
| assert_equals(el.selectionStart, 0, "final selectionStart"); |
| assert_equals(el.selectionEnd, 1, "final selectionEnd"); |
| assert_equals(el.selectionDirection, "forward", "final selectionDirection"); |
| }, "text field selection for the input textarea"); |
| </script> |
