navigation-controls.tentative.html (985B)
1 <!DOCTYPE html> 2 <link rel="help" href="https://github.com/fallaciousreasoning/backbutton-mediaquery/blob/master/explainer.md" /> 3 <script type="text/javascript" src="/resources/testharness.js"></script> 4 <script type="text/javascript" src="/resources/testharnessreport.js"></script> 5 <script type="text/javascript" src="resources/matchmedia-utils.js"></script> 6 <script> 7 query_should_be_known("(navigation-controls)"); 8 query_should_be_known("(navigation-controls: none)"); 9 query_should_be_known("(navigation-controls: back-button)"); 10 query_should_be_unknown("(navigation-controls: none back-button)"); 11 query_should_be_unknown("(navigation-controls: back-button/none)"); 12 test(() => { 13 let booleanContext = window.matchMedia("(navigation-controls)"); 14 let none = window.matchMedia("(navigation-controls: none)"); 15 assert_equals(booleanContext.matches, !none.matches); 16 }, "Check that none evaluates to false in the boolean context"); 17 </script>