Javascript Shift Ciper Using Charcodeat And Fromcharcode

[simmchip]

does anyone know how to complete the following,im trying to write a function that prompts for a message, and encode the message using shift cipher. mine does not work for some reason?

change = 0
while(change<Name.length )
{
document.write("<br/> ", fName.substr(change,1), Name.charCodeAt(change))
change++;

}
encode);


function encode()
{

document.write(+ " ", str.charCodeAt(1));
document.write(Str.fromCharCode(str));
document.write("<br />");

document.write(str);

[acoder]

Welcome to The Scripts.

If you're going to prompt for a message, presumably, the page has loaded. document.write should be used during page load, not after the page has loaded.

Instead use a div or a form text box and change the value dynamically using Javascript.

In your code, what's Name and fName? I don't think you've copy-pasted your code correctly.