added demo.html file, finished MX record type parser.

demo.html

@@ -0,0 +1,7 @@
+<!--
+    
+This demo is meant to have 3 feilds that accept base-64, hex and array values the user
+can copy in, and a button that will call the dns parser to parse the input and display 
+the output in a seperate field.  
+
+    -->

dns.type.cname.js

@@ -11,4 +11,3 @@ exports.DNS_TYPE_CNAME = function (ab, packet, record) {
 };
 
 }('undefined' !== typeof window ? window : exports));
-

dns.type.mx.js

@@ -30,7 +30,7 @@ exports.DNS_TYPE_MX = function (ab, packet, record) {
     for (var i = 0; i < dv.byteLength; i += 1) {
         
 
-        console.log(dv.getUint8(i, false.toString(16)));        
+        // console.log(dv.getUint8(i, false.toString(16)));        
         //Priority is the first two bytes
         if (i < 2){
 
@@ -53,7 +53,7 @@ exports.DNS_TYPE_MX = function (ab, packet, record) {
             console.log("data at index " + i + ":" + temp);
             
             // I need to place the '.' in the correct place. This is wrong though.
-            if ((temp.trim() === ''  && i > 2) || (!temp.match(/^[a-zA-Z0-9._-]+$/) && i > 2)) {
+            if ((temp.trim() === ''  && i > 2) /*|| (!temp.match(/^[a-zA-Z0-9._-]+$/) && i > 2)*/) {
                 s.exchange += ".";
             }
 
@@ -75,7 +75,7 @@ exports.DNS_TYPE_MX = function (ab, packet, record) {
 
     // the below code returns an empty string. 
     
-    // s.exchange = unpackLabels(new Uint8Array(ab), record.rdstart, { byteLength: 0, cpcount: 0, labels: [], name: '' }).labels;
+    s.exchange = unpackLabels(new Uint8Array(ab), record.rdstart+2, { byteLength: 0, cpcount: 0, labels: [], name: '' }).labels;
 
     return s;