Finished Chapter 14 exercise 1

Author: Drummingcoder

ch14exercise1.js

@@ -0,0 +1,27 @@
+function HttpRequest(url, callback, async) {
+    this.request = new XMLHttpRequest();
+    this.request.open("GET", url, async);
+    var tempRequest = this.request;
+    function reqReadyStateChange() {
+        if (tempRequest.readyState == 4) {
+            if (tempRequest.status == 200) {
+                callback(tempRequest.responseText);
+            } else {
+                alert("An error occurred trying to contact the server.");
+            }
+        }
+    }
+    if (async) {
+        this.request.onreadystatechange = reqReadyStateChange;
+    } else {
+        this.request.send(null);
+        if (tempRequest.status == 200) {
+            callback(tempRequest.responseText);
+        } else {
+            alert("An error occurred trying to contact the server.");
+        }
+    }
+}
+HttpRequest.prototype.send = function () {
+    this.request.send(null);
+};