third_party/WebKit/LayoutTests/fast/dom/collection-null-like-arguments.html

   1 <p>This test reports the value that document.all returns for various null-like arguments.</p>
   2 <p>Written for <a href="http://bugs.webkit.org/show_bug.cgi?id=13106">http://bugs.webkit.org/show_bug.cgi?id=13106</a>.</p>
   3 <hr>
   4 <pre id="log"></pre>
   5
   6 <script>
   7 function log(s)
   8 {
   9     document.getElementById("log").appendChild(document.createTextNode(s));
  10 }
  11
  12 function getDescription(value)
  13 {
  14     if (value === undefined)
  15         return "undefined";
  16     if (value === null)
  17         return "null";
  18     if (typeof value == "number")
  19         return value;
  20     if (typeof value == "string")
  21         return '"' + value + '"';
  22
  23     return "unkown description";
  24 }
  25
  26 window.onload = function onload()
  27 {
  28     if ("testRunner" in this)
  29         testRunner.dumpAsText();
  30
  31     var arguments = [
  32         0,
  33         "",
  34         "0",
  35         undefined,
  36         null
  37     ];
  38
  39     for (var i = 0; i < arguments.length; i++) { //>
  40         var value = arguments[i];
  41         var description = getDescription(value);
  42         log("document.all[" + description + "]:      " + document.all[value] + "\n");
  43         log("document.all(" + description + "):      " + document.all(value) + "\n");
  44         log("document.all.item(" + description + "): " + document.all.item(value) + "\n");
  45         log("\n");
  46     }
  47 }
  48
  49 </script>