diff --git a/js/Interest.js b/js/Interest.js
new file mode 100644
index 0000000..03f792d
--- /dev/null
+++ b/js/Interest.js
@@ -0,0 +1,126 @@
+ /*
+ * @author: ucla-cs
+ * This class represents Interest Objects
+ */
+
+var Interest = function Interest(_Name,_FaceInstance,_MinSuffixComponents,_MaxSuffixComponents,_PublisherPublicKeyDigest, _Exclude, _ChildSelector,_AnswerOriginKind,_Scope,_InterestLifetime,_Nonce){
+		
+	this.Name = _Name;
+	this.FaceInstance = _FaceInstance;
+	this.MaxSuffixComponents = _MaxSuffixComponents;
+	this.MinSuffixComponents = _MinSuffixComponents;
+	
+	this.PublisherKeyDigest = _PublisherPublicKeyDigest;
+	this.Exclude = _Exclude;
+	this.ChildSelector = _ChildSelector;
+	this.AnswerOriginKind = _AnswerOriginKind;
+	this.Scope = _Scope;
+	this.InterestLifetime = null;		// For now we don't have the ability to set an interest lifetime
+	this.Nonce = _Nonce;
+	
+
+	this.RECURSIVE_POSTFIX = "*";
+
+	this.CHILD_SELECTOR_LEFT = 0;
+	this.CHILD_SELECTOR_RIGHT = 1;
+	this.ANSWER_CONTENT_STORE = 1;
+	this.ANSWER_GENERATED = 2;
+	this.ANSWER_STALE = 4;		// Stale answer OK
+	this.MARK_STALE = 16;		// Must have Scope 0.  Michael calls this a "hack"
+
+	this.DEFAULT_ANSWER_ORIGIN_KIND = this.ANSWER_CONTENT_STORE | this.ANSWER_GENERATED;
+
+};
+
+Interest.prototype.decode = function(/*XMLDecoder*/ decoder) {
+
+		decoder.readStartElement(CCNProtocolDTags.Interest);
+
+		this.Name = new ContentName();
+		this.Name.decode(decoder);
+
+		if (decoder.peekStartElement(CCNProtocolDTags.MinSuffixComponents)) {
+			this.MinSuffixComponents = decoder.readIntegerElement(CCNProtocolDTags.MinSuffixComponents);
+		}
+
+		if (decoder.peekStartElement(CCNProtocolDTags.MaxSuffixComponents)) {
+			this.MaxSuffixComponents = decoder.readIntegerElement(CCNProtocolDTags.MaxSuffixComponents);
+		}
+			
+		//TODO decode PublisherID
+		/*if (PublisherID.peek(decoder)) {
+			this.Publisher = new PublisherID();
+			this.Publisher.decode(decoder);
+		}*/
+
+		if (decoder.peekStartElement(CCNProtocolDTags.Exclude)) {
+			this.Exclude = new Exclude();
+			this.Exclude.decode(decoder);
+		}
+		
+		if (decoder.peekStartElement(CCNProtocolDTags.ChildSelector)) {
+			this.ChildSelector = decoder.readIntegerElement(CCNProtocolDTags.ChildSelector);
+		}
+		
+		if (decoder.peekStartElement(CCNProtocolDTags.AnswerOriginKind)) {
+			// call setter to handle defaulting
+			this.AnswerOriginKind = decoder.readIntegerElement(CCNProtocolDTags.AnswerOriginKind);
+		}
+		
+		if (decoder.peekStartElement(CCNProtocolDTags.Scope)) {
+			this.Scope = decoder.readIntegerElement(CCNProtocolDTags.Scope);
+		}
+
+		if (decoder.peekStartElement(CCNProtocolDTags.InterestLifetime)) {
+			this.InterestLifetime = decoder.readBinaryElement(CCNProtocolDTags.InterestLifetime);
+		}
+		
+		if (decoder.peekStartElement(CCNProtocolDTags.Nonce)) {
+			this.Nonce = decoder.readBinaryElement(CCNProtocolDTags.Nonce);
+		}
+		
+		decoder.readEndElement();
+};
+
+Interest.prototype.encode = function(/*XMLEncoder*/ encoder){
+		/*if (!validate()) {
+			throw new ContentEncodingException("Cannot encode " + this.getClass().getName() + ": field values missing.");
+		}*/
+		
+		encoder.writeStartElement(CCNProtocolDTags.Interest);
+		
+		this.Name.encode(encoder);
+	
+		if (null != this.MinSuffixComponents) 
+			encoder.writeElement(CCNProtocolDTags.MinSuffixComponents, this.MinSuffixComponents);	
+
+		if (null != this.MaxSuffixComponents) 
+			encoder.writeElement(CCNProtocolDTags.MaxSuffixComponents, this.MaxSuffixComponents);
+
+		//TODO Encode PublisherID
+		
+		/*if (null != this.PublisherID)
+			publisherID().encode(encoder);*/
+		
+		//TODO Encode Exclude
+		
+		//if (null != this.Exclude)
+			//exclude().encode(encoder);
+		
+		if (null != this.ChildSelector) 
+			encoder.writeElement(CCNProtocolDTags.ChildSelector, this.ChildSelector);
+
+		//TODO Encode OriginKind
+		if (this.DEFAULT_ANSWER_ORIGIN_KIND != this.AnswerOriginKind && this.AnswerOriginKind!=null) 
+			//encoder.writeElement(CCNProtocolDTags.AnswerOriginKind, this.AnswerOriginKind);
+		
+		if (null != this.Scope) 
+			encoder.writeElement(CCNProtocolDTags.Scope, this.Scope);
+		
+		if (null != this.Nonce)
+			encoder.writeElement(CCNProtocolDTags.Nonce, this.Nonce);
+		
+		encoder.writeEndElement();
+
+};
+