test_domProxyArrayLengthGetter.html (682B)
1 <!DOCTYPE html> 2 <html> 3 <!-- 4 https://bugzilla.mozilla.org/show_bug.cgi?id=1221421 5 --> 6 <head> 7 <meta charset="utf-8"> 8 <title>Test for Bug 1221421</title> 9 <script src="/tests/SimpleTest/SimpleTest.js"></script> 10 <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/> 11 <script type="text/javascript"> 12 13 var x = document.documentElement.style; 14 x.__proto__ = [1, 2, 3]; 15 16 var res = 0; 17 for (var h = 0; h < 5000; ++h) { 18 res += x.length; 19 } 20 is(res, 15000, "length getter should return array length"); 21 22 </script> 23 </head> 24 25 <body> 26 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1221421">Mozilla Bug 1221421</a> 27 </body> 28 </html>