Develop Reference

How can I create a secret message app using the square code method?

I need to create a secret message app, such that a text:
"If man was meant to stay on the ground, god would have given us roots."
is normalized to:
"ifmanwasmeanttostayonthegroundgodwouldhavegivenusroots"
And the normalised text forms a rectangle (​r x c​) where ​c​ is the number of columns and ​r​ is the number of rows such that ​c >= r​ and ​c - r <= 1​,
So for instance the normalized text is 54 characters long, dictating a rectangle with ​c = 8​ and ​r = 7​:
"ifmanwas"
"meanttos"
"tayonthe"
"groundgo"
"dwouldha"
"vegivenu"
"sroots "
Then the coded message is obtained by reading down the columns going left to right
"imtgdvsfearwermayoogoanouuiontnnlvtwttddesaohghnsseoau"
and further split to
"imtgdvs fearwer mayoogo anouuio ntnnlvt wttddes aohghn sseoau"
The resulting cypher text for a non perfect rectangle can only have a single whitespace for the last rows.
"imtgdvs"
"fearwer"
"mayoogo"
"anouuio"
"ntnnlvt"
"wttddes"
"aohghn "
"sseoau "
This what I have done so far, I could only get my normalised text, but I am doing something wrong to convert it to a rectangle and to get a cypher text out of it.
const output = document.querySelector('#encoded_rectangle');
const encodedChunks = document.querySelector('#encoded_chunks');
const text = document.querySelector('#normalized_text');
const string = document.querySelector('#message');
const error = document.querySelector('#alert');
const encodeMessage = () => {
let message = string.value;
function wordCount() {
return message.split(" ").length;
}
if (wordCount < 2 || message.length < 50) {
error.innerHTML = "Invalid message, Input more than one word and at Least 50 characters!";
return false;
}
function normaliseMessage() {
return message.replace(/[^a-zA-Z0-9]/g, "").toLowerCase();
}
function rectangleSize() {
return Math.ceil(Math.sqrt(normaliseMessage.length));
}
function splitRegEx() {
return new RegExp(".{1," + rectangleSize + "}", "g");
}
function plaintextSegments() {
return normaliseMessage.match(splitRegEx);
}
function ciphertext() {
var columns = [],
currentLetter, currentSegment;
var i, j;
for (let i = 0; i < rectangleSize; i++) {
columns.push([]);
}
for (i = 0; i < plaintextSegments.length; i++) {
currentSegment = plaintextSegments[i];
for (j = 0; j < columns.length; j++) {
currentLetter = currentSegment[j];
columns[j].push(currentLetter);
}
}
for (i = 0; i < columns.length; i++) {
columns[i] = columns[i].join("");
}
return columns.join("");
}
function normalizeCipherText() {
return ciphertext.match(splitRegEx).join(" ");
}
text.innerHTML = plaintextSegments();
encodedChunks.innerHTML = ciphertext();
output.innerHTML = normalizeCipherText();
}
<form>
<input type="text" placeholder="Type your secret message" id="message">
<p id="alert"></p>
<button type="button" class="button" onclick="encodeMessage()">Encode message</button>
</form>
<div class="box">
<h3>Normalised Text</h3>
<p id="normalized_text"></p>
</div>
<div class="box">
<h3>Encoded Chunks</h3>
<p id="encoded_chunks">
</p>
</div>
<div class="box">
<h3>Encoded Rectangle</h3>
<p id="encoded_rectangle">
</p>
</div>

Most of your code is constructed of very short methods.
Usually I'd consider a good practice, but in this case I think it just made the code less readable.
Additionally, I have to say that the HTML part wasn't necessary in terms of solving the issue - which was clearly Javascript/algorithm related.
This is my solution, which can be modified to match your context:
const input = "If man was meant to stay on the ground, god would have given us roots.";
const normalizedInput = input.replace(/[^\w]/g, "").toLowerCase();
const length = normalizedInput.length;
const cols = Math.ceil(Math.sqrt(length));
const rows = Math.ceil(length / cols);
var cypherText = "";
for (let i = 0; i < cols; i ++) {
for (let j = i; j < normalizedInput.length; j += cols) {
cypherText += normalizedInput[j];
}
cypherText += '\n';
}
console.log(cypherText);

This is what I came up with
const output = document.querySelector('#encoded_rectangle');
const encodedChunks = document.querySelector('#encoded_chunks');
const text = document.querySelector('#normalized_text');
const string = document.querySelector('#message');
const error = document.querySelector('#alert');
const encodeMessage = () => {
let message = string.value;
var normalisedText = message.replace(/[^a-zA-Z0-9]/g, "");
var textCount = normalisedText.length;
if (textCount < 50) {
console.log("Invalid message, Input more than one word and at Least 50 characters!");
return false;
}
var higest = Math.ceil(Math.sqrt(textCount));
var lowest = Math.ceil(textCount/higest);
var rect = [];
var coded = [];
var innerObj = {};
var resulting = "";
rect = rectangleSize(higest,lowest,normalisedText);
//read text from top-down i hotago!!!
coded = readFromTopDown(rect, higest);
coded.forEach(co => {
resulting += co.trim();
});
//nwa idi sharp, nice logic
console.log("Normalized: " + normalisedText);
console.log("Count: " + textCount);
console.log(rect);
console.log(coded);
console.log("Resulting: " + resulting);
function rectangleSize(higest, lowest, normalise) {
var rect = [];
var startIndex = 0;
for(var i = 0; i < lowest; i++){
if(i !== 0)
startIndex += higest;
if(normalise.substring(startIndex, startIndex + higest).length == higest){
rect.push(normalise.substring(startIndex, startIndex + higest))
}else{
//get the remainder as spaces
var spaces = higest - normalise.substring(startIndex, startIndex + higest).length;
var textI = normalise.substring(startIndex, startIndex + higest);
var str = textI + new Array(spaces + 1).join(' ');
rect.push(str);
}
}
return rect;
}
function readFromTopDown(rect, higest) {
var coded = [];
for(var i = 0; i < higest; i++){
var textMain = "";
rect.forEach(re => {
textMain += re.substring(i, i+1);
});
coded.push(textMain);
}
return coded;
}
}
<form>
<input type="text" placeholder="Type your secret message" id="message">
<p id="alert"></p>
<button type="button" class="button" onclick="encodeMessage()">Encode message</button>
</form>
<div class="box">
<h3>Normalised Text</h3>
<p id="normalized_text"></p>
</div>
<div class="box">
<h3>Encoded Chunks</h3>
<p id="encoded_chunks"></p>
</div>
<div class="box">
<h3>Encoded Rectangle</h3>
<p id="encoded_rectangle"></p>
</div>
Try and see

JavaScript Code Optimization - Creating Reusable Classes

I am new to JavaScript and need help with code optimization. I am pretty sure there are some ways to create "classes" to run my code better and more efficient.
Here is the link to my jsfiddle demo version: JSFiddle Demo
<form id="tyreForm">
<div id="currentTyre">
<h2>Current Tyre Size</h2>
<div id="errorDisplay"></div>
<input type="number" id="sectionWidth"> /
<input type="number" id="aspectRatio"> R
<input type="number" id="rimDiameter">
<p>Sidewall: <span class="output"></span></p>
<p>Width: <span class="output"></span></p>
<p>Diameter: <span class="output" id="fullDiameter"></span></p>
<p>Circumference: <span class="output"></span></p>
<p>Reverse / Mile: <span class="output"></span></p>
</div>
<div id="newTyre">
<h2>New Tyre Size</h2>
<input type="number" id="newSectionWidth"> /
<input type="number" id="newAspectRatio"> R
<input type="number" id="newRimDiameter">
<p>Sidewall: <span class="output"></span></p>
<p>Width: <span class="output"></span></p>
<p>Diameter: <span class="output" id="newFullDiameter"></span></p>
<p>Circumference: <span class="output"></span></p>
<p>Reverse / Mile: <span class="output"></span></p>
</div>
<div id="result">
<h2>Tyre difference</h2>
<p>Diameter Difference(%): <span id="diameterDifference"></span></p>
</div>
<button type="submit">Calculate</button>
</form>
document.getElementById('tyreForm').addEventListener('submit', function(e) {
e.preventDefault();
var sw = this.sectionWidth.value;
var ar = this.sectionWidth.value;
var rd = this.sectionWidth.value;
var nsw = this.newSectionWidth.value;
var nar = this.newAspectRatio.value;
var nrd = this.newRimDiameter.value;
/* Form Validation Starts */
var errorDisplay = document.getElementById('errorDisplay');
errorDisplay.style.display = 'block';
if (sw == '' || ar == '' || rd == '') {
errorDisplay.style.color = "red";
errorDisplay.textContent = "Error: Please fill all the fields";
return false;
}
if (sw == 0 || ar == 0 || rd == 0) {
errorDisplay.style.color = "red";
errorDisplay.textContent = "Error: Please check your input fields. 0 is not valid";
return false;
}
/* Form Validation Finishes */
this.getElementsByClassName("output")[0].textContent = sidewall(sw, ar).toFixed(2);
this.getElementsByClassName("output")[1].textContent = width(sw, ar, rd).toFixed(2);
this.getElementsByClassName("output")[2].textContent = diameter(sw, ar, rd).toFixed(2);
this.getElementsByClassName("output")[3].textContent = circumference(sw, ar, rd).toFixed(2);
this.getElementsByClassName("output")[4].textContent = reverseMile(sw, ar, rd).toFixed(2);
this.getElementsByClassName("output")[5].textContent = sidewall(nsw, nar).toFixed(2);
this.getElementsByClassName("output")[6].textContent = width(nsw, nar, nrd).toFixed(2);
this.getElementsByClassName("output")[7].textContent = diameter(nsw, nar, nrd).toFixed(2);
this.getElementsByClassName("output")[8].textContent = circumference(nsw, nar, nrd).toFixed(2);
this.getElementsByClassName("output")[9].textContent = reverseMile(nsw, nar, nrd).toFixed(2);
var fd = document.getElementById('fullDiameter').textContent;
var nfd = document.getElementById('newFullDiameter').textContent;
document.getElementById('diameterDifference').textContent = diameterDifference(fd, nfd);
}, false);
/* All functions */
function sidewall(sw, ar) {
return ((sw * (ar/100)) / 25.4);
}
function width(sw, ar) {
return (sw / 25.4);
}
function diameter(sw, ar, rd) {
return ((sidewall(sw, ar) * 2) + parseFloat(rd));
}
function circumference(sw, ar, rd) {
return (((((sw * (ar/100)) / 25.4) * 2)+ parseInt(rd)) * 3.14);
}
function reverseMile(sw, ar, rd) {
return (63360 / (((((sw * (ar/100)) / 25.4) * 2)+ parseInt(rd)) * 3.14));
}
function diameterDifference(fd, nfd) {
return fd * nfd; // Just dummy formula
}
The main idea is:
Have two forms where people can enter their tire sizes.
If only the first form filled with data - calculation happens only in the first form
If both forms are filled with data - both forms' calculations are proceeded plus some data is passed to third form
Please check jsfiddle for more information.
Thanks in advance!
Best

You should create a Tyre prototype that takes sectionWidth, aspectRatio, and rimDiameter in the "constructor" and more all of your functions into that prototype. Doing this will simplify the logic of your code and will help you adhere to the principles of DRY (don't repeat yourself).
var Tyre = function(sectionWidth, aspectRatio, rimDiameter) {
this.sw = sectionWidth;
this.ar = aspectRatio;
this.rd = rimDiameter;
this.isEmpty = function() {
return this.sw === '' || this.ar === '' || this.rd === '';
};
this.isZero = function() {
return this.sw == 0 || this.ar == 0 || this.rd == 0;
};
this.width = function() {
return this.sw / 25.4;
};
this.sidewall = function() {
return this.width() * this.ar / 100;
};
this.diameter = function() {
return 2 * this.sidewall() + parseFloat(this.rd);
};
this.circumference = function() {
return this.diameter() * Math.PI;
};
this.reverseMile = function() {
return 63360 / this.circumference();
};
this.diameterDifference = function(other) {
return this.diameter() * other.diameter();
};
};
document.getElementById('tyreForm').addEventListener('submit', function(e) {
e.preventDefault();
var currentTyre = new Tyre(this.sectionWidth.value, this.aspectRatio.value, this.rimDiameter.value);
var newTyre = new Tyre(this.newSectionWidth.value, this.newAspectRatio.value, this.newRimDiameter.value);
/* Form Validation Starts */
var errorDisplay = document.getElementById('errorDisplay');
errorDisplay.style.display = 'block';
if (currentTyre.isEmpty()) {
errorDisplay.style.color = "red";
errorDisplay.textContent = "Error: Please fill all the fields";
return false;
}
if (currentTyre.isZero()) {
errorDisplay.style.color = "red";
errorDisplay.textContent = "Error: Please check your input fields. 0 is not valid";
return false;
}
/* Form Validation Finishes */
this.getElementsByClassName("output")[0].textContent = currentTyre.sidewall().toFixed(2);
this.getElementsByClassName("output")[1].textContent = currentTyre.width().toFixed(2);
this.getElementsByClassName("output")[2].textContent = currentTyre.diameter().toFixed(2);
this.getElementsByClassName("output")[3].textContent = currentTyre.circumference().toFixed(2);
this.getElementsByClassName("output")[4].textContent = currentTyre.reverseMile().toFixed(2);
if (newTyre.isEmpty() || newTyre.isZero())
return;
this.getElementsByClassName("output")[5].textContent = newTyre.sidewall().toFixed(2);
this.getElementsByClassName("output")[6].textContent = newTyre.width().toFixed(2);
this.getElementsByClassName("output")[7].textContent = newTyre.diameter().toFixed(2);
this.getElementsByClassName("output")[8].textContent = newTyre.circumference().toFixed(2);
this.getElementsByClassName("output")[9].textContent = newTyre.reverseMile().toFixed(2);
document.getElementById('diameterDifference').textContent = currentTyre.diameterDifference(newTyre);
}, false);

Multiple progress bars visualy update only one

i'm working on my JavaScript skills and this is my first program trial here.
Everything was going quite well for me, but i'm stuck on this problem for about 3 days now and i guess there is something i don't get over here.
Well, diving in - i have 2 separate "Training Fields" - each has it's own "Train" button (onclick function) , "Level up" button (onclick function) and progress bar.
The problem is that the higher "Training Field" will progress the lower progress bar and not it's own.
Help will be appreciated! thx
//ignore this line, it's for me for testing
document.getElementById('hideMe').style.visibility = 'hidden';
/*========================================
Javascript for first set
========================================*/
var bodyTotal = 0;
var totalBodyCost = 0;
var bodyCost = 100;
var amountLoaded = 1;
function buyBody(){
bodyCost = totalBodyCost + Math.floor(100 * Math.pow(1.1,bodyTotal));
if(amountLoaded >= bodyCost){
totalBodyCost += bodyCost;
bodyTotal = bodyTotal + 1;
document.getElementById('bodyTotal').innerHTML = bodyTotal;
var finalMessage = document.getElementById('bodyFinalMessage').style.visibility = 'hidden';
amountLoaded = 0;
};
var nextCost = totalBodyCost + Math.floor(100 * Math.pow(1.1,bodyTotal));
document.getElementById('bodyCost').innerHTML = nextCost;
document.getElementById("bodyProgressBar").max = nextCost;
bodyCost = nextCost;
progressBarSim(amountLoaded);
};
function progressBarSim(al) {
var bar = document.getElementById('bodyProgressBar');
var status = document.getElementById('bodyStatus');
status.innerHTML = al+"/" +bodyCost;
bar.value = al;
al++;
var sim = "progressBarSim("+al+")";
}
function trainBody(){
progressBarSim(amountLoaded);
if(amountLoaded < bodyCost){
amountLoaded++;
}else{
var finalMessage = document.getElementById('bodyFinalMessage').style.visibility = 'visible';
finalMessage.innerHTML = "";
}
};
/*=============================================*/
/*========================================
Javascript for second set
========================================*/
var mindTotal = 0;
var totalMindCost = 0;
var mindCost = 100;
var amountLoaded = 1;
function buyMind(){
mindCost = totalMindCost + Math.floor(100 * Math.pow(1.1,mindTotal));
if(amountLoaded >= mindCost){
totalMindCost += mindCost;
mindTotal = mindTotal + 1;
document.getElementById('mindTotal').innerHTML = mindTotal;
var finalMessage = document.getElementById('mindFinalMessage').style.visibility = 'hidden';
amountLoaded = 0;
};
var nextCost = totalMindCost + Math.floor(100 * Math.pow(1.1,mindTotal));
document.getElementById('mindCost').innerHTML = nextCost;
document.getElementById("mindProgressBar").max = nextCost;
mindCost = nextCost;
progressBarSim(amountLoaded);
};
function progressBarSim(al) {
var bar = document.getElementById('mindProgressBar');
var status = document.getElementById('mindStatus');
status.innerHTML = al+"/" +mindCost;
bar.value = al;
al++;
var sim = "progressBarSim("+al+")";
}
function trainMind(){
progressBarSim(amountLoaded);
if(amountLoaded < mindCost){
amountLoaded++;
}else{
var finalMessage = document.getElementById('mindFinalMessage').style.visibility = 'visible';
finalMessage.innerHTML = "";
}
};
/*=============================================*/
<html>
<head>
<link rel="stylesheet" type="text/css" href="interface.css" />
</head>
<body>
<div style="float:right">
Body Level: <span id="bodyTotal">0</span>
<button onclick="trainBody()">Train Body</button><br>
<progress id="bodyProgressBar" value="0" max="100" style="width:200px; float:left;"></progress>
<span id="bodyStatus" style="float:left; z-index:555; margin-left:-110px;">0/100</span>
<button id="bodyFinalMessage" style="float:left; visibility:hidden" onclick="buyBody()">Body Level Up</button>
<br><br>
Mind Level: <span id="mindTotal">0</span>
<button onclick="trainMind()">Train Mind</button><br>
<progress id="mindProgressBar" value="0" max="100" style="width:200px; float:left;"></progress>
<span id="mindStatus" style="float:left; z-index:555; margin-left:-110px;">0/100</span>
<button id="mindFinalMessage" style="float:left; visibility:hidden" onclick="buyMind()">Mind Level Up</button>
</div>
<div id="hideMe" style="position:absolute; top:400; left:400">
Body Cost: <span id="bodyCost">100</span><br>
Mind Cost: <span id="mindCost">100</span>
</div>
<script type="text/javascript" src="main.js"></script>
</body>
</html>

You are reassigning variables and functions using the exact same names amountLoaded, progressBarSim(al).
Because body and mind behavior are very similar you could use a module pattern (http://www.adequatelygood.com/JavaScript-Module-Pattern-In-Depth.html) to use the same variable and function names within their own scopes.
<button onclick="Body.onClick()">Body</button>
<button onclick="Mind.onClick()">Mind</button>
And in your script file
var Body = (function() {
var me = {};
me.onClick = function() {
console.log("body click");
progressBar(al);
};
function progressBar(al) {
}
return me;
})();
var Mind = (function() {
var me = {};
me.onClick = function() {
console.log("mind click");
progressBar(al);
};
function progressBar(al) {
}
return me;
})();
The gotcha here is you can't use body with the inline onclick since that already refers to the body element.

javascript Uncaught TypeError: .indexOf is not a function

This is the javascript code:
/**
* Created by Alejandro on 25/02/2016.
*/
var aantalKoppels = 2;
function setup(){
var btnToevoegen = document.getElementById("btnToevoegen");
btnToevoegen.addEventListener("click", koppelToevoegen);
var btnReplace = document.getElementById("btnReplace");
btnReplace.addEventListener("click", update);
}
function koppelToevoegen() {
var parameterDataKoppel = document.createElement("div");
var labelParameter = document.createElement("label");
labelParameter.innerHTML = "Parameter:";
labelParameter.setAttribute("for", "parameter" + aantalKoppels);
var parameter = document.createElement("input");
parameter.id = "parameter" + aantalKoppels;
parameter.setAttribute("type", "text");
var labelData = document.createElement("label");
labelData.innerHTML = "Data:";
labelData.setAttribute("for", "data" + aantalKoppels);
var data = document.createElement("input");
data.id = "data" + aantalKoppels;
data.setAttribute("type", "text");
parameterDataKoppel.appendChild(labelParameter);
parameterDataKoppel.appendChild(parameter);
parameterDataKoppel.appendChild(labelData);
parameterDataKoppel.appendChild(data);
var parameterDataKoppels = document.getElementById("parameterDataKoppels");
parameterDataKoppels.appendChild(parameterDataKoppel);
aantalKoppels++;
}
function update() {
var parameterDataKoppels = [];
var rangnummerKoppel = 1;
for(var i = 0; i < aantalKoppels - 1; i++) {
var parameter = (document.getElementById("parameter" + rangnummerKoppel)).value;
var data = (document.getElementById("data" + rangnummerKoppel)).value;
parameterDataKoppels[i] = [parameter.trim(), data.trim()];
rangnummerKoppel++;
}
var template = document.getElementById("template");
vervangAlles(template, parameterDataKoppels);
}
function vervangAlles(template, parameterDataKoppels) {
for(var i = 0; i < parameterDataKoppels.length; i++) {
var result = vervang(template, parameterDataKoppels[i][0], parameterDataKoppels[i][1]);
template = result;
}
var output = document.getElementById("txtOutput");
output.innerHTML = template;
return template;
}
function vervang(template, parameter, data) {
var result = template.substring(0, template.indexOf(parameter)) + data;
var i = template.indexOf(parameter) + parameter.length;
while(template.indexOf(parameter, i) !== -1) {
var indexVolgende = template.indexOf(parameter, i);
result += (template.substring(i, indexVolgende)) + data;
i = indexVolgende + parameter.length;
}
result += template.substring(i, template.length);
return result;
}
window.addEventListener("load",setup,false);
This code should take a template (String), parameters (String word out of text) and data (String) as input to then replace al the parameters in the text by the String data. I do get an error which I can't figure out at the first line in the last function:
Uncaught TypeError: template.indexOf is not a functionvervang # ReplaceFunction.js:61vervangAlles # ReplaceFunction.js:52update # ReplaceFunction.js:47
this is the html code:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<script type="text/javascript" charset="utf-8" src="../scripts/ReplaceFunction.js"></script>
<title>ReplaceFunction</title>
</head>
<body>
<div>
<label for="template">Template:</label>
<input id="template" type="text" />
</div>
<div id="parameterDataKoppels">
<div>
<label for="parameter1">Parameter:</label>
<input id="parameter1" type="text" />
<label for="data1">Data:</label>
<input id="data1" type="text" />
</div>
</div>
<input id="btnToevoegen" type="button" value="Koppel toevoegen" />
<input id="btnReplace" type="button" value="Replace" />
<p id="txtOutput">geen output</p>
</body>
</html>
I hope somebody knows why I get this error.

It seems like your 'update' should be
function update() {
var parameterDataKoppels = [];
var rangnummerKoppel = 1;
for(var i = 0; i < aantalKoppels - 1; i++) {
var parameter = (document.getElementById("parameter" + rangnummerKoppel)).value;
var data = (document.getElementById("data" + rangnummerKoppel)).value;
parameterDataKoppels[i] = [parameter.trim(), data.trim()];
rangnummerKoppel++;
}
//var template = document.getElementById("template");
var template = document.getElementById("template").value;
vervangAlles(template, parameterDataKoppels);
}

JavaScript Not Triggering

So I've got the beginnings of an animation script here:
<div id="card5">
<h4 class="y">Let me be your guide.</h4>
<h1>Here's what I've got:</h1>
<div id="a">
<h4 id="aa">Creativity</h4>
</div>
<div id="b">
<h4 id="bb">Know-how</h4>
</div>
<div id="c">
<h4 id="cc">Familiarity</h4>
</div>
</div>
<script type="text/javascript">
var aa = document.getElementById("aa");
var bb = document.getElementById("bb");
var cc = document.getElementById("cc");
var aamargin = style.aa.marginTop | 30;
var bbmargin = style.bb.marginTop | 30;
var ccmargin = style.cc.marginTop | 30;
var a = document.getElementById("a");
var b = document.getElementById("b");
var c = document.getElementsByTagName("c");
var aadown = true;
var bbdown = true;
var ccdown = true;
a.onmouseover = amove;
b.onmouseover = bmove;
c.onmouseover = cmove;
function amove() {
window.alert("Herro!");
if (aadown) {
aaup();
aadown = false;
}
}
function aaup() {
if (aamargin > 0) {
aamargin -= 1;
style.aa.marginTop = aamargin + "%";
requestAnimationFrame(aaup);
}
}
</script>
And when I mouse over the first div ("a"), of course, nothing happens. I put an alert box in to see if the amove() function was being triggered, and it wasn't. The alert never fired. No idea why. It's probably just a typo somewhere...

the error is here:
var aamargin = style.aa.marginTop | 30;
var bbmargin = style.bb.marginTop | 30;
var ccmargin = style.cc.marginTop | 30;
I think you mean aa.style instead of style.aa?

Two errors with style.aa.marginTop | 30;:
| is a bitwise operator, if you want logical OR, you need ||, like this: style.aa.marginTop || 30;
style is not defined, you need aa.style, like this: aa.style.marginTop || 30;
Last thing: bmove and cmove are not defined.
See the patched example here:
<div id="card5">
<h4 class="y">Let me be your guide.</h4>
<h1>Here's what I've got:</h1>
<div id="a">
<h4 id="aa">Creativity</h4>
</div>
<div id="b">
<h4 id="bb">Know-how</h4>
</div>
<div id="c">
<h4 id="cc">Familiarity</h4>
</div>
</div>
<script type="text/javascript">
var aa = document.getElementById("aa");
var bb = document.getElementById("bb");
var cc = document.getElementById("cc");
var aamargin = aa.style.marginTop || 30;
var bbmargin = bb.style.marginTop || 30;
var ccmargin = cc.style.marginTop || 30;
var a = document.getElementById("a");
var b = document.getElementById("b");
var c = document.getElementsByTagName("c");
var aadown = true;
var bbdown = true;
var ccdown = true;
bmove = cmove = amove; // just a quickfix
a.onmouseover = amove;
b.onmouseover = bmove;
c.onmouseover = cmove;
function amove() {
window.alert("Herro!");
if (aadown) {
aaup();
aadown = false;
}
}
function aaup() {
if (aamargin > 0) {
aamargin -= 1;
aa.style.marginTop = aamargin + "%";
requestAnimationFrame(aaup);
}
}
</script>