test_input_datetime_preventDefault.html (664B)
1 <!doctype html> 2 <title>Test for bug 1848158</title> 3 <script src="/tests/SimpleTest/SimpleTest.js"></script> 4 <script src="/tests/SimpleTest/EventUtils.js"></script> 5 <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/> 6 <input id="input" type="date" value="1998-01-22"> 7 <script> 8 SimpleTest.waitForExplicitFinish(); 9 SimpleTest.waitForFocus(function() { 10 let value = input.value; 11 12 input.addEventListener("keydown", function(e) { 13 e.preventDefault(); 14 }); 15 16 isnot(value, "", "should have a value"); 17 18 input.focus(); 19 synthesizeKey("KEY_Backspace"); 20 is(input.value, value, "Value shouldn't change"); 21 SimpleTest.finish(); 22 }); 23 </script>