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>

How to decode this url (combination of Base64 and UTF8)?

I have come across an url that I need to decode.
After trying multiple base64 (utf8), and JS url decoders online, it doesn't help, though the latter did work to an extent.
The url is;
starplayer://%3Curl%3Ebolwl6pIrBrL1GEf7V%2F5Uy6eoFPW77xb5jrS%2BCqRb3%2BoaVq%2Fm3REcqkDQzNsEu2JH6Q2ysUzG73Is93y%2FhmRNK10znrzHKOmEcFITgVDIQeGRVDk7iMBeDth%2BNzmZLIK1yDadYIyBvUPAJ4JRiHzevUVOQ8FMVUJzWAtA5qONGf40KaP31iKvMICFJ3lRjI1cuclOg4KxDo8GeQfmsS7xCAbX1XSWMNlEQ%2Fqzaaht2Gj1fWfbgo%2FsJbGVGSr5swv7ezk4S77LV%2BLpT%2FGbRLbovv0X%2BE4bAQFBtbxfsJ%2BjRU%3D%3Cbase_url%3Ehttp%3A%2F%2Fwww.etoosindia.com%2F%3Cwidth%3E720%3Cheight%3E500%3Ctopmost%3Etrue%3Cresizing%3Eundefined%3Ccookie%3EX2dhPUdBMS4yLjM2NzU5MzMwNS4xNDk4MjExMjczOyBjb29raWVfdWlkPTsgbWVtX25tPVpHOXVkQ0JqWVd4czsgbWVtX2lkPVoyeHdaM1ZvWkdOQWMyaGhjbXRzWVhObGNuTXVZMjl0OyBtZW1fY2Q9TnpreU1EVTU7IF9femxjbWlkPWhBZ1hnVGM4bU1Iekxl%3Ccaption%3ERXRvb3MlMjBJbmRpYQ%3D%3D
After putting the above into a url decoder, I got;
starplayer://<url>bolwl6pIrBrL1GEf7V/5Uy6eoFPW77xb5jrS+CqRb3+oaVq/m3REcqkDQzNsEu2JH6Q2ysUzG73Is93y/hmRNK10znrzHKOmEcFITgVDIQeGRVDk7iMBeDth+NzmZLIK1yDadYIyBvUPAJ4JRiHzevUVOQ8FMVUJzWAtA5qONGf40KaP31iKvMICFJ3lRjI1cuclOg4KxDo8GeQfmsS7xCAbX1XSWMNlEQ/qzaaht2Gj1fWfbgo/sJbGVGSr5swv7ezk4S77LV+LpT/GbRLbovv0X+E4bAQFBtbxfsJ+jRU=<base_url>http://www.etoosindia.com/<width>720<height>500<topmost>true<resizing>undefined<cookie>X2dhPUdBMS4yLjM2NzU5MzMwNS4xNDk4MjExMjczOyBjb29raWVfdWlkPTsgbWVtX25tPVpHOXVkQ0JqWVd4czsgbWVtX2lkPVoyeHdaM1ZvWkdOQWMyaGhjbXRzWVhObGNuTXVZMjl0OyBtZW1fY2Q9TnpreU1EVTU7IF9femxjbWlkPWhBZ1hnVGM4bU1Iekxl<caption>RXRvb3MlMjBJbmRpYQ==
The above url was decoded by a script I am attaching below (see end);
var STARPLAYER_EXE_NOT_INSTALLED = "The StarPlayer is not installed.";
var STARPLAYER_EXE_WANT_TO_INSTALL = "Do you want to install?";
var STARPLAYER_UNKNOWN_INSTALLED = "Has the StarPlayer is running normally?";
var StarPlayerExe = {};
StarPlayerExe.run = function() {
if (typeof this.url == "undefined") {
alert("undefined url");
return
}
var a = this;
StarPlayerLaunchUri(a.getUrl(), function() {
a.result(true, a.install)
}, function() {
a.result(false, a.install)
}, function() {
a.unKnownResult(a.install)
})
}
;
function base_url() {
var b = location.protocol;
var a = location.host;
return b + "//" + a + "/"
}
StarPlayerExe.getUrl = function() {
var a = "<url>" + this.url + "<base_url>" + base_url() + "<width>" + this.width + "<height>" + this.height + "<topmost>" + this.topmost + "<resizing>" + this.resizing + "<cookie>" + Base64.encode(document.cookie) + "<caption>" + Base64.encode(encodeURIComponent(this.caption));
return "starplayer://" + encodeURIComponent(a)
}
;
StarPlayerExe.result = function(a, c) {
if (a == false) {
var b = confirm(STARPLAYER_EXE_NOT_INSTALLED + "\n" + STARPLAYER_EXE_WANT_TO_INSTALL);
if (b == true) {
window.location.href = c
}
}
}
;
StarPlayerExe.unKnownResult = function(b) {
if (COOKIE.get("starplayer_installed") != "true") {
var a = confirm(STARPLAYER_UNKNOWN_INSTALLED);
if (a == true) {
COOKIE.set("starplayer_installed", "true", 60)
} else {
window.location.href = b
}
}
}
;
function StarPlayerLaunchUri(g, d, b, o) {
var s, k, a, j, n, l, m, h, r;
function f(e) {
if (typeof e === "function") {
e()
}
}
function p(t) {
var e;
if (!t) {
t = document.body
}
e = document.createElement("iframe");
e.style.display = "none";
t.appendChild(e);
return e
}
function c(e) {
if (!j) {
return
}
if (!e) {
e = document.body
}
e.removeChild(j);
j = null
}
var i = navigator.appVersion.indexOf("Edge/12") != -1 ? true : false;
r = {
isChrome: false,
isFirefox: false,
isIE: false,
isSafari: false
};
if (window.chrome && !navigator.userAgent.match(/Opera|OPR\//)) {
r.isChrome = true
} else {
if (typeof InstallTrigger !== "undefined") {
r.isFirefox = true
} else {
if (i || "ActiveXObject"in window) {
r.isIE = true
} else {
if (navigator.userAgent.match(/Safari\//)) {
r.isSafari = true
}
}
}
}
if (navigator.msLaunchUri) {
navigator.msLaunchUri(g, d, b)
} else {
if (r.isChrome || r.isSafari) {
m = function() {
window.clearTimeout(l);
window.removeEventListener("blur", m);
f(d)
}
;
h = function() {
window.removeEventListener("blur", m);
f(b)
}
;
window.addEventListener("blur", m);
l = window.setTimeout(h, 1000);
window.location.href = g
} else {
if (r.isFirefox) {
j = p();
try {
j.contentWindow.location.href = g;
f(d)
} catch (q) {
if (q.name === "NS_ERROR_UNKNOWN_PROTOCOL") {
f(b)
} else {
f(o)
}
} finally {
c()
}
} else {
if (r.isIE) {
a = window.open("", "launcher", "width=0,height=0");
a.location.href = g;
try {
a.location.href = "about:blank";
f(d);
n = window.setInterval(function() {
a.close();
if (a.closed) {
window.clearInterval(n)
}
}, 500)
} catch (q) {
a = window.open("about:blank", "launcher");
a.close();
f(b)
}
} else {
j = p();
j.contentWindow.location.href = g;
window.setTimeout(function() {
c(k);
f(o)
}, 1000)
}
}
}
}
}
var COOKIE = {
set: function(g, b, d, c) {
var a = new Date();
var f;
switch (c) {
case "day":
a.setDate(a.getDate() + d);
break;
case "hour":
a.setTime(a.getTime() + (d * 60 * 60 * 1000));
break;
default:
a.setDate(a.getDate() + d)
}
if (d) {
f = escape(b) + "; expires=" + a.toGMTString()
} else {
f = escape(b)
}
document.cookie = g + "=" + f + "; path=/"
},
get: function(g) {
var e = document.cookie.split(";");
var d, c, f, b, a;
b = e.length;
for (d = 0; d < b; d++) {
a = e[d].indexOf("=");
c = e[d].substr(0, a);
f = e[d].substr(a + 1);
c = c.replace(/^\s+|\s+$/g, "");
if (c == g) {
return unescape(f)
}
}
},
del: function(a) {
this.set(a, "", -1)
}
};
var Base64 = {
_keyStr: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",
encode: function(c) {
var a = "";
var k, h, f, j, g, e, d;
var b = 0;
c = Base64._utf8_encode(c);
while (b < c.length) {
k = c.charCodeAt(b++);
h = c.charCodeAt(b++);
f = c.charCodeAt(b++);
j = k >> 2;
g = ((k & 3) << 4) | (h >> 4);
e = ((h & 15) << 2) | (f >> 6);
d = f & 63;
if (isNaN(h)) {
e = d = 64
} else {
if (isNaN(f)) {
d = 64
}
}
a = a + this._keyStr.charAt(j) + this._keyStr.charAt(g) + this._keyStr.charAt(e) + this._keyStr.charAt(d)
}
return a
},
decode: function(c) {
var a = "";
var k, h, f;
var j, g, e, d;
var b = 0;
c = c.replace(/[^A-Za-z0-9\+\/\=]/g, "");
while (b < c.length) {
j = this._keyStr.indexOf(c.charAt(b++));
g = this._keyStr.indexOf(c.charAt(b++));
e = this._keyStr.indexOf(c.charAt(b++));
d = this._keyStr.indexOf(c.charAt(b++));
k = (j << 2) | (g >> 4);
h = ((g & 15) << 4) | (e >> 2);
f = ((e & 3) << 6) | d;
a = a + String.fromCharCode(k);
if (e != 64) {
a = a + String.fromCharCode(h)
}
if (d != 64) {
a = a + String.fromCharCode(f)
}
}
a = Base64._utf8_decode(a);
return a
},
_utf8_encode: function(b) {
b = b.replace(/\r\n/g, "\n");
var a = "";
for (var e = 0; e < b.length; e++) {
var d = b.charCodeAt(e);
if (d < 128) {
a += String.fromCharCode(d)
} else {
if ((d > 127) && (d < 2048)) {
a += String.fromCharCode((d >> 6) | 192);
a += String.fromCharCode((d & 63) | 128)
} else {
a += String.fromCharCode((d >> 12) | 224);
a += String.fromCharCode(((d >> 6) & 63) | 128);
a += String.fromCharCode((d & 63) | 128)
}
}
}
return a
},
_utf8_decode: function(a) {
var b = "";
var d = 0;
var e = c1 = c2 = 0;
while (d < a.length) {
e = a.charCodeAt(d);
if (e < 128) {
b += String.fromCharCode(e);
d++
} else {
if ((e > 191) && (e < 224)) {
c2 = a.charCodeAt(d + 1);
b += String.fromCharCode(((e & 31) << 6) | (c2 & 63));
d += 2
} else {
c2 = a.charCodeAt(d + 1);
c3 = a.charCodeAt(d + 2);
b += String.fromCharCode(((e & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
d += 3
}
}
}
return b
}
};
Can the above code be used to decode this url, and if so, how?
If anyone can help me decode this, I would be very thankful.

TypeError: entry is undefined

What is the problem with this error
TypeError: entry is undefined
This error appears in the Firefox browser
<script type='text/javascript'>
//<![CDATA[
function showlatestpostswiththumbs(json) {
document.write('<div class="terbaru">');
for (var i = 0; i < posts_no; i++) {
var entry = json.feed.entry[i];
var posttitle = entry.title.$t;
var postsurl;
if (i == json.feed.entry.length) break;
for (var k = 0; k < entry.link.length; k++) {
if (entry.link[k].rel == 'replies' && entry.link[k].type == 'text/html') {
var commentstext = entry.link[k].title;
var commentsurl = entry.link[k].href;
}
if (entry.link[k].rel == 'alternate') {
postsurl = entry.link[k].href;
break;
}
}
var recenthumb;
try {
recenthumb = entry.media$postImageUrl.url;
} catch (error) {
s = entry.content.$t;
a = s.indexOf("<img");
b = s.indexOf("src=\"", a);
c = s.indexOf("\"", b + 5);
d = s.substr(b + 5, c - b - 5);
if ((a != -1) && (b != -1) && (c != -1) && (d != "")) {
recenthumb = d;
} else recenthumb = 'https://2.bp.blogspot.com/-C3Mo0iKKiSw/VGdK808U7rI/AAAAAAAAAmI/W7Ae_dsEVAE/s1600/no-thumb.png';
}
document.write('<div class="mas-elemen">');
document.write('<img src="' + recenthumb + '"/>');
document.write('<h6>' + posttitle + '</h6>');
document.write('</div>');
}
document.write('</div>');
}
//]]>
</script>
<script style='text/javascript'>
var posts_no = 10;
var showpoststhumbs = true;
var readmorelink = true;
</script>
<script src="/feeds/posts/default/?orderby=published&alt=json-in-script&callback=showlatestpostswiththumbs"></script>

This error is causing because of this line
var entry = json.feed.entry[i];
because the json you passed into the function showlatestpostswiththumbs doesn't have a value at json.feed.entry[i], so entry is now undefined, please give correct json into that function (showlatestpostswiththumbs), thats all I can give with the info from your question

Using the input box instead of pop function

How can I use an input box instead of prompt on this code?
Code is
here.
Once I click on the link; a prompt pops up and asks to type a number or Q to quit. How would I change that to input box?
function Stack() {
var items = [];
this.push = function(element){
items.push(element);
};
this.pop = function(){
return items.pop();
};
this.peek = function(){
return items[items.length-1];
};
this.isEmpty = function(){
return items.length == 0;
};
this.size = function(){
return items.length;
};
this.clear = function(){
items = [];
};
this.print = function(){
alert("Stack Elements are:"+items.toString());
};
}
Declare stack object:
var stack = new Stack();
while(1)
{
var element = prompt("Enter stack element,(q or Q to exit)", "");
if(element == 'q' || element =='Q')
{
break;
}
else
{
if(element=='*'
|| element=='+' || element=='-' || element=='/')
{
//Check if stack is empty
if(stack.isEmpty() || stack.size<2 )
{
alert("Invalid Operation, Stack is empty or size is less than 2");
}
else
{
var op1 = stack.pop();
var op2 = stack.pop();
if(element=='*')
{
var res = op1 * op2;
}
else if(element=='+')
{
var res = op1 + op2;
}
else if(element=='-')
{
var res = op1 - op2;
}
else if(element=='/')
{
var res = op1 / op2;
}
stack.push(res);
stack.print();
}
}
else
{
stack.push(element);
stack.print();
}
}
}

try following example :
FIDDLE
var stack = new Stack();
function Stack() {
var items = [];
this.push = function(element) {
items.push(element);
};
this.pop = function() {
return items.pop();
};
this.peek = function() {
return items[items.length - 1];
};
this.isEmpty = function() {
return items.length == 0;
};
this.size = function() {
return items.length;
};
this.clear = function() {
items = [];
};
this.print = function() {
theList.options.length = 0;
for (var i = 0; i < items.length; i++) {
var theOption = new Option(items[i]);
theList.options[theList.options.length] = theOption;
}
};
}
function pushStack(newVal) {
if (newVal == '*' || newVal == '+' || newVal == '-' || newVal == '/') {
//Check if stack is empty
if (stack.isEmpty() || stack.size < 2) {
alert("Invalid Operation, Stack is empty or size is less than 2");
} else {
var op1 = stack.pop();
var op2 = stack.pop();
if (newVal == '*') {
var res = op1 * op2;
} else if (newVal == '+') {
var res = op1 + op2;
} else if (newVal == '-') {
var res = op1 - op2;
} else if (newVal == '/') {
var res = op1 / op2;
}
stack.push(res);
}
} else {
stack.push(newVal);
}
}
function popStack() {
var popVal = stack.pop();
if (popVal == undefined)
return "Empty stack!";
else
return popVal;
}
function showStack() {
stack.print();
}
<FORM>
<INPUT type="text" name="txtPush" id="txtPush" />
<INPUT type=button value="Push" onClick='pushStack(txtPush.value); txtPush.value=""; showStack(theList);' />
<SELECT name="theList" id="theList" size=12>
<OPTION>Displays the current state of the stack!</OPTION>
</SELECT>
</FORM>

Any Good Number Picker for JQuery (or Javascript)?

Are there any good number picker for jquery (or standalone js)?
I would like a number picker where there is a max and min number that the user can choose from. Also, it have other options such as displaying odd number or even number or prime number or a range of number whereby some numbers in between are skipped.

Using a select to do this you can create an array with the numbers to skip and do a for loop to write the options:
int minNumber = 0;
int maxNumber = 10;
int[] skipThese = { 5, 7 };
for (int i = minNumber; i <= maxNumber; i++)
{
if(!skipThese.Contains(i)) Response.Write(String.Concat("<option value=\"", i, "\">", i, "</option>"));
}
You can do this with razor or any other way to output the HTML.
You can also do this with jQuery, dynamicaly, following the same idea:
$(document).ready(function() {
var minNumber = 0;
var maxNumber = 10;
var skipThese = [5, 7];
for (var i = minNumber; i <= maxNumber; i++) {
if ($.inArray(i, skipThese) == -1) $('#selectListID').append("<option value=\"" + i + "\">" + i + "</option>");
}
});
Edit:
Or you can use the C# code above in an aspx page and load it with AJAX from the page:
Create a select box in the page:
<select name="numPicker" id="numPicker">
<option>Loading...</option>
</select>
In a script in this page you could use jQuery's ajax() to fetch the data and populate the <select>:
$(document).ready(function() {
var numPickerSelect = $("#numPicker");
$.ajax({
url: 'url/to/page.aspx',
type: 'post'
success: function(data) {
numPickerSelect.find('option').remove(); // Remove the options in the select field
numPickerSelect.append(data); // Load the content generated by the server into the select field
},
error: function() {
alert('An error has ocurred!');
}
});
//Or use this (not sure if will work)
numPickerSelect.load("url/to/page.aspx");
});

I have used this. You should be able to modify to add extra options such as min and max fairly easily.
// Make a control only accept numeric input
// eg, $("#myedit").numeric()
// $("#myedit").numeric({alow: ' ,.'})
// $("#myedit").numeric({decimals: 2})
(function($) {
$.fn.alphanumeric = function(p) {
if (p == 'destroy') {
$(this).unbind('keypress');
$(this).unbind('blur');
return;
}
p = $.extend({
ichars: "!##$%^&*()+=[]\\\';,/{}|\":<>?~`.- ",
nchars: "",
allow: "",
decimals: null
}, p);
return this.each
(
function() {
if (p.nocaps) p.nchars += "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
if (p.allcaps) p.nchars += "abcdefghijklmnopqrstuvwxyz";
s = p.allow.split('');
for (i = 0; i < s.length; i++) if (p.ichars.indexOf(s[i]) != -1) s[i] = "\\" + s[i];
p.allow = s.join('|');
var reg = new RegExp(p.allow, 'gi');
var ch = p.ichars + p.nchars;
ch = ch.replace(reg, '');
var dp = p.decimals;
var isInteger = function(val) {
var objRegExp = /(^-?\d\d*$)/;
return objRegExp.test(val);
};
var isNumeric = function(val) {
// If the last digit is a . then add a 0 before testing so if they type 25. it will be accepted
var lastChar = val.substring(val.length - 1);
if (lastChar == ".") val = val + "0";
var objRegExp = new RegExp("^\\s*-?(\\d+(\\.\\d{1," + dp + "})?|\\.\\d{1," + dp + "})\\s*$", "g");
if (dp == -1)
objRegExp = new RegExp("^\\s*-?(\\d+(\\.\\d{1,25})?|\\.\\d{1,25})\\s*$", "g");
var result = objRegExp.test(val);
return result;
};
$(this).blur(function(e) {
var text = $(this).val();
if (dp != null) {
if (dp == 0) {
if (!isInteger(text)) {
$(this).val('');
e.preventDefault();
}
}
else {
if (!isNumeric(text)) {
$(this).val('');
e.preventDefault();
}
}
} else {
var c = text.split('')
for (i = 0; i < text.length; i++) {
if (ch.indexOf(c[i]) != -1) {
$(this).val('');
e.preventDefault();
};
}
}
});
$(this).keypress
(
function(e) {
switch (e.which) {
//Firefox fix, for ignoring specific presses
case 8: // backspace key
return true;
case 46: // delete key
return true;
};
if (dp != null) {
if (e.which == 32) { e.preventDefault(); return false; }
var range = getRange(this);
var typed = String.fromCharCode(e.which);
var text = $(this).val().substr(0, range.start) + typed + $(this).val().substr(range.start);
if (dp == 0) {
if (!isInteger(text)) e.preventDefault();
}
else {
if (!isNumeric(text)) e.preventDefault();
}
return;
}
if (!e.charCode) k = String.fromCharCode(e.which);
else k = String.fromCharCode(e.charCode);
if (ch.indexOf(k) != -1) e.preventDefault();
if (e.ctrlKey && k == 'v') e.preventDefault();
}
);
$(this).bind('contextmenu', function() { return false });
}
);
};
$.fn.numeric = function(p) {
if (p == 'destroy') {
$(this).unbind('keypress');
$(this).unbind('blur');
return;
}
var az = "abcdefghijklmnopqrstuvwxyz";
az += az.toUpperCase();
var opts = {};
if (!isNaN(p)) {
opts = $.extend({
nchars: az
}, { decimals: p });
} else {
opts = $.extend({
nchars: az
}, p);
}
return this.each(function() {
$(this).alphanumeric(opts);
}
);
};
$.fn.integer = function(p) {
if (p == 'destroy') {
$(this).unbind('keypress');
$(this).unbind('blur');
return;
}
var az = "abcdefghijklmnopqrstuvwxyz";
az += az.toUpperCase();
p = {
nchars: az,
allow: '-',
decimals: 0
};
return this.each(function() {
$(this).alphanumeric(p);
}
);
};
$.fn.alpha = function(p) {
if (p == 'destroy') {
$(this).unbind('keypress');
$(this).unbind('blur');
return;
}
var nm = "1234567890";
p = $.extend({
nchars: nm
}, p);
return this.each(function() {
$(this).alphanumeric(p);
}
);
};
})(jQuery);