textarea-scrollbar-sizing-001.html (1806B)
1 <!DOCTYPE html> 2 <link rel="help" href="https://html.spec.whatwg.org/C/#the-textarea-element-2"> 3 <title>Test textarea width and height accounting for scrollbars</title> 4 <meta name="author" title="Luke Warlow" href="mailto:lwarlow@igalia.com"> 5 <script src="/resources/testharness.js"></script> 6 <script src="/resources/testharnessreport.js"></script> 7 <body> 8 <textarea id="rows1" rows="1"></textarea> 9 <textarea id="rows1Hidden" rows="1" style="overflow-x: hidden"></textarea> 10 <textarea id="rows1Scroll" rows="1" style="overflow-x: scroll"></textarea> 11 <textarea id="cols3" cols="3"></textarea> 12 <textarea id="cols3Hidden" cols="3" style="overflow-y: hidden"></textarea> 13 <textarea id="cols3Scroll" cols="3" style="overflow-y: scroll"></textarea> 14 <div id="scrollableDiv" style="overflow:scroll"></div> 15 16 <script> 17 const scrollbarsHaveThickness = (scrollableDiv.offsetHeight != 0); 18 test(() => { 19 assert_equals(rows1.offsetWidth, rows1Hidden.offsetWidth); 20 assert_equals(rows1.offsetHeight, rows1Hidden.offsetHeight); 21 }, 'rows=1 doesnt include scrollbar thickness'); 22 23 test(() => { 24 assert_equals(rows1.offsetWidth, rows1Scroll.offsetWidth); 25 if (scrollbarsHaveThickness) { 26 assert_less_than(rows1.offsetHeight, rows1Scroll.offsetHeight); 27 } else { 28 assert_equals(rows1.offsetHeight, rows1Scroll.offsetHeight); 29 } 30 }, 'rows=1 overflow scroll includes scrollbar thickness'); 31 32 test(() => { 33 assert_equals(cols3.offsetWidth, cols3Scroll.offsetWidth); 34 if (scrollbarsHaveThickness) { 35 assert_greater_than(cols3.offsetWidth, cols3Hidden.offsetWidth); 36 } else { 37 assert_equals(cols3.offsetWidth, cols3Hidden.offsetWidth); 38 } 39 assert_equals(cols3.offsetHeight, cols3Scroll.offsetHeight); 40 assert_equals(cols3.offsetHeight, cols3Hidden.offsetHeight); 41 }, 'cols=3 includes scrollbar thickness'); 42 </script>