Initial data commit

Task/Active-object/JavaScript/active-object-1.js

@@ -0,0 +1,26 @@
+function Integrator(sampleIntervalMS) {
+    var inputF = function () { return 0.0 };
+    var sum = 0.0;
+
+    var t1 = new Date().getTime();
+    var input1 = inputF(t1 / 1000);
+
+    function update() {
+        var t2 = new Date().getTime();
+        var input2 = inputF(t2 / 1000);
+        var dt = (t2 - t1) / 1000;
+
+        sum += (input1 + input2) * dt / 2;
+
+        t1 = t2;
+        input1 = input2;
+    }
+
+    var updater = setInterval(update, sampleIntervalMS);
+
+    return ({
+        input: function (newF) { inputF = newF },
+        output: function () { return sum },
+        shutdown: function () { clearInterval(updater) },
+    });
+}

Task/Active-object/JavaScript/active-object-2.js

@@ -0,0 +1,20 @@
+<p><span id="a">Test running...</span> <code id="b">-</code></p>
+
+<script type="text/javascript">
+    var f = 0.5;
+
+    var i = new Integrator(1);
+    var displayer = setInterval(function () { document.getElementById("b").firstChild.data = i.output() }, 100)
+
+    setTimeout(function () {
+        i.input(function (t) { return Math.sin(2*Math.PI*f*t) }); // test step 1
+        setTimeout(function () { // test step 2
+            i.input(function (t) { return 0 }); // test step 3
+            setTimeout(function () { // test step 3
+                i.shutdown();
+                clearInterval(displayer);
+                document.getElementById("a").firstChild.data = "Done, should be about 0: "
+            }, 500);
+        }, 2000);
+    }, 1)
+</script>