Caesar cipher implementation

I am not very familiar with JavaScript and I'am a little confused with the object oriented peculiarities of it. I am trying to create a Caesar shift using the concepts of objects, methods and properties in JavaScript. I am using an HTML form to take input from user and OnClick return the encoded cipher text to user. This is what I have. I'm pretty much sure about my logic but I guess my object creation and method calls fall through. Am I doing it right?

function Caesar(order){
this.order = order;
this.encode = encode;
function encode(input){
this.output = '';
for (var i = 0; i = 65 && this.c = 97 && this.c 

Enter Plaintext :  
Enter Shift:       --How do I get the input from here and create my caesar object and pass the constructor the shift from this text box?
 --How do I call the encode() method with input from the plaintext text box?  

Your code is reviewable, even if it does not work, from a once over:

-
Indent your code (!!), this is bad:

function Caesar(order){
this.order = order;
this.encode = encode;
function encode(input){
this.output = '';
for (var i = 0; i = 65 && this.c = 97 && this.c <= 122) this.output += String.fromCharCode((this.c - 97 + this.key) % 26 + 97);  // Lowercase
else   this.output += input.charAt(i);    
}
return answer.innerHTML= output;
 }

This is better:

function Caesar(order){
    this.order = order;
    this.encode = encode;
    function encode(input){
        this.output = '';
        for (var i = 0; i = 65 && this.c = 97 && this.c <= 122) 
                // Lowercase
                this.output += String.fromCharCode((this.c - 97 + this.key) % 26 + 97);  
            else   
                this.output += input.charAt(i);    
        }
    return answer.innerHTML= output;
}

• Caesar is an unfortunate name

• It does not really say what it does ( one can guess )

• it should not start with a capital C, it is not a constructor

• The Caesar is completely wrong

• it puts encode in this.encode and then never uses this.encode

• if encode were called, it set this.output but then in the end you put output in answer.innerHTML

• you try to access answer, but you never declared it with var, much less pointed it to the answer element with getElementById

• You hardcode magical numbers

• Some developers know 65 is A, you should put a comment about that

• Same for 97 , 26 and 122

• order -> what does order do ? Should be commented, it is not obvious

• onclick ="encode()"

StackExchange Code Review Q#45609, answer score: 8