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Diffstat (limited to 'test/js/verify-instanceofness.html')
-rw-r--r-- | test/js/verify-instanceofness.html | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/test/js/verify-instanceofness.html b/test/js/verify-instanceofness.html new file mode 100644 index 000000000..631dc99c4 --- /dev/null +++ b/test/js/verify-instanceofness.html @@ -0,0 +1,40 @@ +<html> + <head><title>Verify instanceof checking</title></head> + <body> + <h1>Check instanceof behaviour</h1> + <table cellpadding=2 border=1> + <tr><th>A</th><th>instanceof</th><th>B</th><th>?</th><th>Correct?</th></tr> + <script> +var checks = [ + [ "window", "Window", true ], + [ "document", "HTMLDocument", true ], + [ "document.head", "Node", true ], + [ "document.getElementsByTagName(\"body\")", "HTMLCollection", true ], + [ "document.body", "Window", false ], + [ "EventListener", "Object", undefined ], +]; + +for (var _check in checks) { + var check = checks[_check]; + document.write("<tr>"); + document.write("<td>" + check[0] + "</td><td>instanceof</td><td>" + check[1] + "</td>"); + try { + var A = eval(check[0]); + var B = eval(check[1]); + var C = check[2]; + var V = A instanceof B; + var OK = V == C; + document.write("<td>" + V + "</td><td>" + (OK ? "YES" : "<b style=\"color: red\">NO</b>") + "</td>"); + } catch (e) { + if (check[2] == undefined) { + document.write("<td>" + e + "</td><td>YES</td>"); + } else { + document.write("<td colspan=2><b style=\"color: red\">" + e + "</b></td>"); + } + } + document.write("</tr>"); +} + </script> + </table> + </body> +</html> |