third_party/WebKit/LayoutTests/fast/js/nested-function-scope.html

   1 <p>This page tests issues of scope with nested functions.</p>
   2 <pre id="console"></pre>
   3
   4 <script>
   5 function log(s)
   6 {
   7     document.getElementById("console").appendChild(document.createTextNode(s + "\n"));
   8 }
   9
  10 function shouldBe(evalA, a, b)
  11 {
  12     if (evalA === b) {
  13         log("PASS: " + a + " should be " + b + " and is.");
  14     } else {
  15         log("FAIL: " + a + " should be " + b + " but instead is " + evalA + ".");
  16     }
  17 }
  18
  19 if (window.testRunner)
  20     testRunner.dumpAsText();
  21
  22 log("Before parsing f:");
  23 log("-----");
  24 shouldBe(typeof f, "typeof f", "function");
  25 shouldBe(typeof f.f1, "typeof f.f1", "undefined");
  26
  27 function f(x)
  28 {
  29     function f1() {
  30         log("\nIn call to f:");
  31         log("-----");
  32         shouldBe(typeof f, "typeof f", "function");
  33         shouldBe(typeof f1, "typeof f1", "function");
  34         shouldBe(typeof f.f1, "typeof f.f1", "undefined");
  35         shouldBe(typeof x, "typeof x", "number");
  36         shouldBe(typeof y, "typeof y", "undefined");
  37     }
  38
  39     f1();
  40 }
  41 f.y = 1;
  42
  43 log("\nAfter parsing f, but before calling f:");
  44 log("-----");
  45 shouldBe(typeof f, "typeof f", "function");
  46 shouldBe(typeof f.f1, "typeof f.f1", "undefined");
  47
  48 f(1);
  49 </script>