Initial data commit

Task/Stack-traces/JavaScript/stack-traces-1.js

@@ -0,0 +1,5 @@
+try {
+  throw new Error;
+} catch(e) {
+  alert(e.stack);
+}

Task/Stack-traces/JavaScript/stack-traces-2.js

@@ -0,0 +1,9 @@
+function foo () {
+  var stack = "Stack trace:";
+  for (var f = arguments.callee // current function
+       ; f; f = f.caller) {
+    stack += "\n" + f.name;
+  }
+  alert(stack);
+}
+foo();