border-width-computed.html (2077B)
1 <!DOCTYPE html> 2 <html> 3 <head> 4 <meta charset="utf-8"> 5 <title>CSS Backgrounds and Borders: getComputedStyle().borderWidth</title> 6 <link rel="help" href="https://drafts.csswg.org/css-backgrounds/#border-width"> 7 <meta name="assert" content="border-width computed value is the absolute length; zero if the border style is none or hidden."> 8 <script src="/resources/testharness.js"></script> 9 <script src="/resources/testharnessreport.js"></script> 10 <script src="/css/support/computed-testcommon.js"></script> 11 <style> 12 #box { 13 border-style: dotted; /* Avoid border-*-width computed style 0 */ 14 border-top-width: thin; 15 border-right-width: medium; 16 border-bottom-width: thick; 17 } 18 #target { 19 border-style: dotted; /* Avoid border-*-width computed style 0 */ 20 font-size: 40px; 21 } 22 </style> 23 </head> 24 <body> 25 <div id="box"></div> 26 <div id="target"></div> 27 <script> 28 'use strict'; 29 const box = document.getElementById('box'); 30 const thinWidth = getComputedStyle(box).borderTopWidth; 31 const mediumWidth = getComputedStyle(box).borderRightWidth; 32 const thickWidth = getComputedStyle(box).borderBottomWidth; 33 34 test_computed_value("border-width", "1px"); 35 test_computed_value("border-width", "1px 2px"); 36 test_computed_value("border-width", "1px 2px 3px"); 37 test_computed_value("border-width", "1px 2px 3px 4px"); 38 39 test_computed_value("border-width", "0.5em", "20px"); 40 test_computed_value("border-width", "2px thin medium thick", "2px " + thinWidth + " " + mediumWidth + " " + thickWidth); 41 42 test_computed_value("border-top-width", "0px"); 43 test_computed_value("border-right-width", "10px"); 44 test_computed_value("border-bottom-width", "calc(-0.5em + 10px)", "0px"); 45 test_computed_value("border-left-width", "calc(0.5em + 10px)", "30px"); 46 47 test(() => { 48 const thin = Number(thinWidth.replace("px", "")); 49 const medium = Number(mediumWidth.replace("px", "")); 50 const thick = Number(thickWidth.replace("px", "")); 51 assert_less_than_equal(0, thin); 52 assert_less_than_equal(thin, medium); 53 assert_less_than_equal(medium, thick); 54 }, "thin ≤ medium ≤ thick"); 55 </script> 56 </body> 57 </html>