i am facing an issue with below mentioned code. The errors are 'aggiungiPrimaOpzione typeError: cannot read property insertBefore of null' and 'inizializza typeError: cannot set property onchange of undefined'.
it also provides a sintaxError: http://i68.tinypic.com/2zdodj5.png
var nodoGenere;
var nodoCategoria;
var nodoCerca;
var nodoRisultato;
var collezione = [
{
genere: "uomo",
categoria: "maglietta",
nome: "maglietta1",
foto: "img/foto1.jpg",
prezzo: 40
},
{
genere: "donna",
categoria: "pantaloni",
nome: "pantalone1",
foto: "img/foto2.jpg",
prezzo: 50
}
];
function gestoreGenere(){
try {
var genere = nodoGenere.value;
var generi = calcolaGenere();
creaSelect(nodoGenere, generi);
nodoGenere.value = genere;
var categorie = ricercaCategoria(genere);
creaSelect(nodoCategoria, categorie);
aggiungiPrimaOpzione(nodoCategoria, "----- categoria ----");
} catch(e) {
alert("gestoreGenere" + e);
}
}
function ricercaCategoria(genere) {
try {
var categorie = {};
for (var i = 0; i < collezione.length; i++) {
var abito = collezione[i];
if (abito.genere == genere) {
categorie[abito.genere] = true;
}
}
return categorie;
} catch(e) {
alert("ricercaCategoria" + e);
}
}
function aggiungiPrimaOpzione(nodoSelect, opzione) {
try {
var nodoOpzione = document.createElement("option");
nodoOpzione.value = opzione;
var nodoTesto = document.createTextNode(opzione);
nodoOpzione.appendChild(nodoTesto);
nodoSelect.insertBefore(nodoOpzione, nodoSelect.firstChild);
nodoSelect.value = opzione;
} catch(e) {
alert("aggiungiPrimaOpzione" + e);
}
}
function gestoreCategoria() {
try {
var genere = nodoGenere.value;
var categoria = nodoCategoria.value;
var categorie = ricercaCategoria(categoria);
creaSelect(nodoCategoria, categorie);
nodoCategoria.value = categoria;
var abiti = ricercaMultipla(genere, categoria);
var listaDescrizioni = calcolaListaDescrizioni(abiti);
creaLista(nodoRisultato, listaDescrizioni);
} catch(e) {
alert("gestoreCategoria" + e);
}
}
function calcolaListaDescrizioni(abiti) {
try {
var listaDescrizioni = [];
for (var i = 0; i < abiti.length; i++){
var abito = abiti[i];
var s = abito.categoria + "dio cane" + abito.genere;
listaDescrizioni.push(s);
}
return listaDescrizioni;
} catch(e) {
alert("calcolaListaDescrizioni" + e);
}
}
function ricercaMultipla(genere, categoria) {
try {
var abiti = [];
for (var i = 0; i < collezione.length; i++) {
var abito = collezione[i];
if (abito.genere == genere && abito.categoria == categoria) {
abiti.push(abito);
}
}
return abiti;
} catch(e) {
alert("ricercaMultipla" + e);
}
}
function calcolaGenere() {
try {
var generi = {};
for (var i = 0; i < collezione.length; i++) {
var abito = collezione[i];
generi[abito.genere] = true;
}
return generi;
} catch(e) {
alert("calcolaGenere" + e);
}
}
function calcolaCategorie() {
try {
var categorie = {};
for (var i = 0; i < collezione.length; i++) {
var abito = collezione[i];
categorie[abito.categoria] = true;
}
return categorie;
} catch(e) {
alert("calcolaCategorie" + e);
}
}
function creaSelect(nodoSelect, opzioni) {
try {
rimuoviFigli(nodoSelect);
for (var opzione in opzioni) {
var nodoOpzione = document.createElement("option");
nodoOpzione.value = opzione;
var nodoTesto = document.createTextNode(opzione);
nodoOpzione.appendChild(nodoTesto);
nodoSelect.appendChild(nodoOpzione);
}
} catch(e) {
alert("creaSelect" + e);
}
}
function creaLista(nodoLista, elementi) {
try {
rimuoviFigli(nodoLista);
for (var i = 0; i < elementi.length; i++) {
var elemento = elementi[i];
var nodoElemento = document.createElement("li");
nodoLista.appendChild(nodoElemento);
var nodoTesto = document.createTextNode(elemento);
nodoElemento.appendChild(nodoTesto);
}
} catch(e) {
alert("creaLista" + e);
}
}
function rimuoviFigli(nodo){
while (nodo.childNodes.lenght > 0) {
nodo.removeChild(nodo.firstChild);
}
}
function inizializza() {
try {
var nodoGenere = document.getElementById("genere");
var nodoCategoria = document.getElementById("categoria");
var nodoRisultato = document.getElementById("risultato");
var genere = calcolaGenere();
creaSelect(nodoGenere, genere);
aggiungiPrimaOpzione(nodoGenere, "----- genere ----");
aggiungiPrimaOpzione(nodoCategoria, "---- categoria ----");
nodoGenere.onchange = gestoreGenere;
nodoCategoria.onchange = gestoreCategoria;
} catch(e) {
alert("inizializza" + e);
}
}
window.onload = inizializza;
and the HTML:
<!DOCTYPE html>
<html lang="">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title> prova </title>
<script src="main.js"></script>
</head>
<body>
<select id="genere"></select>
<select id="categoria"></select>
<input type="button" id="cerca" value="cerca">
<div id="risultato"></div>
</body>
</html>
Thank you in advice for your response.
Related
I have the following bit of code whereby I'm using class expressions
const ShapeOverlays = class {
constructor(elm) {
this.elm = elm;
this.path = elm.querySelectorAll('path');
this.numPoints = 4;
this.duration = 1000;
this.delayPointsArray = [];
this.delayPointsMax = 0;
this.delayPerPath = 60;
this.timeStart = Date.now();
this.isOpened = false;
this.isAnimating = false;
}
}
(function() {
const elmHamburger = document.querySelector('.hamburger');
const gNavItems = document.querySelectorAll('.global-menu__item');
const elmOverlay = document.querySelector('.shape-overlays');
const overlay = new ShapeOverlays(elmOverlay);
elmHamburger.addEventListener('click', () => {
if (overlay.isAnimating) {
return false;
}
overlay.toggle();
if (overlay.isOpened === true) {
elmHamburger.classList.add('is-opened-navi');
for (var i = 0; i < gNavItems.length; i++) {
gNavItems[i].classList.add('is-opened');
}
} else {
elmHamburger.classList.remove('is-opened-navi');
for (var i = 0; i < gNavItems.length; i++) {
gNavItems[i].classList.remove('is-opened');
}
}
});
}());
But I'm getting the error
Uncaught ReferenceError: Cannot access 'ShapeOverlays' before initialization
on the line const overlay = new ShapeOverlays(elmOverlay); which is weird because the class has been initialized above. What I'm I doing wrong? Thanks.
Your class expression is missing a semicolon.
const ShapeOverlays = class {
constructor(elm) {
// ...
}
}; // <-- this one
Working:
const Test = class {
constructor() {
this.isOpened = false;
this.isAnimating = false;
}
};
(function() {
const overlay = new Test(4);
console.log(overlay)
}());
Not working:
const Test = class {
constructor() {
this.isOpened = false;
this.isAnimating = false;
}
}
(function() {
const overlay = new Test(4);
console.log(overlay)
}());
you have one too may (...). So, if you moved it to the following I think it should work fine.
const ShapeOverlays = class {
constructor(elm) {
this.elm = elm;
this.path = elm.querySelectorAll("path");
this.numPoints = 4;
this.duration = 1000;
this.delayPointsArray = [];
this.delayPointsMax = 0;
this.delayPerPath = 60;
this.timeStart = Date.now();
this.isOpened = false;
this.isAnimating = false;
}
};
(function () {
const elmHamburger = document.querySelector(".hamburger");
const gNavItems = document.querySelectorAll(".global-menu__item");
const elmOverlay = document.querySelector(".shape-overlays");
const overlay = new ShapeOverlays(elmOverlay);
elmHamburger.addEventListener("click", () => {
if (overlay.isAnimating) {
return false;
}
overlay.toggle();
if (overlay.isOpened === true) {
elmHamburger.classList.add("is-opened-navi");
for (var i = 0; i < gNavItems.length; i++) {
gNavItems[i].classList.add("is-opened");
}
} else {
elmHamburger.classList.remove("is-opened-navi");
for (var i = 0; i < gNavItems.length; i++) {
gNavItems[i].classList.remove("is-opened");
}
}
});
})();
Let me know if it does NOT help. Thanks.
It works if you declare the class inside the function, its happening because you are instantly declaring and invoking the function so the scope is lexical in terms to the globally declared class. See this for reference:https://developer.mozilla.org/en-US/docs/Glossary/IIFE
(function() {
const ShapeOverlays = class {
constructor(elm) {
this.elm = elm;
this.path = elm.querySelectorAll('path');
this.numPoints = 4;
this.duration = 1000;
this.delayPointsArray = [];
this.delayPointsMax = 0;
this.delayPerPath = 60;
this.timeStart = Date.now();
this.isOpened = false;
this.isAnimating = false;
}
}
const elmHamburger = document.querySelector('.hamburger');
const gNavItems = document.querySelectorAll('.global-menu__item');
const elmOverlay = document.querySelector('.shape-overlays');
const overlay = new ShapeOverlays(elmOverlay);
elmHamburger.addEventListener('click', () => {
if (overlay.isAnimating) {
return false;
}
overlay.toggle();
if (overlay.isOpened === true) {
elmHamburger.classList.add('is-opened-navi');
for (var i = 0; i < gNavItems.length; i++) {
gNavItems[i].classList.add('is-opened');
}
} else {
elmHamburger.classList.remove('is-opened-navi');
for (var i = 0; i < gNavItems.length; i++) {
gNavItems[i].classList.remove('is-opened');
}
}
});
}());
I have an ASP.NET page, written in VB.NET, that I'm trying to use javascript on. The script takes the value from one listbox and inserts it into another list box. I'm using a master page, which I'm pretty sure is the issue.
Here's the javascript:
function OT_transferLeft() { moveSelectedOptions(this.right, this.left, this.autoSort, this.staticOptionRegex); this.update(); }
function OT_transferRight() { moveSelectedOptions(this.left, this.right, this.autoSort, this.staticOptionRegex); this.update(); }
function OT_transferAllLeft() { moveAllOptions(this.right, this.left, this.autoSort, this.staticOptionRegex); this.update(); }
function OT_transferAllRight() { moveAllOptions(this.left, this.right, this.autoSort, this.staticOptionRegex); this.update(); }
function OT_saveRemovedLeftOptions(f) { this.removedLeftField = f; }
function OT_saveRemovedRightOptions(f) { this.removedRightField = f; }
function OT_saveAddedLeftOptions(f) { this.addedLeftField = f; }
function OT_saveAddedRightOptions(f) { this.addedRightField = f; }
function OT_saveNewLeftOptions(f) { this.newLeftField = f; }
function OT_saveNewRightOptions(f) { this.newRightField = f; }
function OT_update() {
var removedLeft = new Object();
var removedRight = new Object();
var addedLeft = new Object();
var addedRight = new Object();
var newLeft = new Object();
var newRight = new Object();
for (var i = 0; i < this.left.options.length; i++) {
var o = this.left.options[i];
newLeft[o.value] = 1;
if (typeof (this.originalLeftValues[o.value]) == "undefined") {
addedLeft[o.value] = 1;
removedRight[o.value] = 1;
}
}
for (var i = 0; i < this.right.options.length; i++) {
var o = this.right.options[i];
newRight[o.value] = 1;
if (typeof (this.originalRightValues[o.value]) == "undefined") {
addedRight[o.value] = 1;
removedLeft[o.value] = 1;
}
}
if (this.removedLeftField != null) { this.removedLeftField.value = OT_join(removedLeft, this.delimiter); }
if (this.removedRightField != null) { this.removedRightField.value = OT_join(removedRight, this.delimiter); }
if (this.addedLeftField != null) { this.addedLeftField.value = OT_join(addedLeft, this.delimiter); }
if (this.addedRightField != null) { this.addedRightField.value = OT_join(addedRight, this.delimiter); }
if (this.newLeftField != null) { this.newLeftField.value = OT_join(newLeft, this.delimiter); }
if (this.newRightField != null) { this.newRightField.value = OT_join(newRight, this.delimiter); }
}
function OT_join(o, delimiter) {
var val; var str = "";
for (val in o) {
if (str.length > 0) { str = str + delimiter; }
str = str + val;
}
return str;
}
function OT_setDelimiter(val) { this.delimiter = val; }
function OT_setAutoSort(val) { this.autoSort = val; }
function OT_setStaticOptionRegex(val) { this.staticOptionRegex = val; }
function OT_init(theform) {
this.form = theform;
if (!theform[this.left]) { alert("OptionTransfer init(): Left select list does not exist in form!"); return false; }
if (!theform[this.right]) { alert("OptionTransfer init(): Right select list does not exist in form!"); return false; }
this.left = theform[this.left];
this.right = theform[this.right];
for (var i = 0; i < this.left.options.length; i++) {
this.originalLeftValues[this.left.options[i].value] = 1;
}
for (var i = 0; i < this.right.options.length; i++) {
this.originalRightValues[this.right.options[i].value] = 1;
}
if (this.removedLeftField != null) { this.removedLeftField = theform[this.removedLeftField]; }
if (this.removedRightField != null) { this.removedRightField = theform[this.removedRightField]; }
if (this.addedLeftField != null) { this.addedLeftField = theform[this.addedLeftField]; }
if (this.addedRightField != null) { this.addedRightField = theform[this.addedRightField]; }
if (this.newLeftField != null) { this.newLeftField = theform[this.newLeftField]; }
if (this.newRightField != null) { this.newRightField = theform[this.newRightField]; }
this.update();
}
// -------------------------------------------------------------------
// OptionTransfer()
// This is the object interface.
// -------------------------------------------------------------------
function OptionTransfer(l, r) {
this.form = null;
this.left = l;
this.right = r;
this.autoSort = true;
this.delimiter = ",";
this.staticOptionRegex = "";
this.originalLeftValues = new Object();
this.originalRightValues = new Object();
this.removedLeftField = null;
this.removedRightField = null;
this.addedLeftField = null;
this.addedRightField = null;
this.newLeftField = null;
this.newRightField = null;
this.transferLeft = OT_transferLeft;
this.transferRight = OT_transferRight;
this.transferAllLeft = OT_transferAllLeft;
this.transferAllRight = OT_transferAllRight;
this.saveRemovedLeftOptions = OT_saveRemovedLeftOptions;
this.saveRemovedRightOptions = OT_saveRemovedRightOptions;
this.saveAddedLeftOptions = OT_saveAddedLeftOptions;
this.saveAddedRightOptions = OT_saveAddedRightOptions;
this.saveNewLeftOptions = OT_saveNewLeftOptions;
this.saveNewRightOptions = OT_saveNewRightOptions;
this.setDelimiter = OT_setDelimiter;
this.setAutoSort = OT_setAutoSort;
this.setStaticOptionRegex = OT_setStaticOptionRegex;
this.init = OT_init;
this.update = OT_update;
}
var lb1 = document.getElementById("<%=lbSiteType.ClientID%>");
var lb2 = document.getElementById("<%=lbSelectedSiteType.ClientID%>");
var opt = new OptionTransfer(lb1, lb2);
alert(opt);
opt.setAutoSort(true);
opt.setDelimiter(",");
opt.setStaticOptionRegex("^(Bill|Bob|Matt)$");
opt.saveRemovedLeftOptions("removedLeft");
opt.saveRemovedRightOptions("removedRight");
opt.saveAddedLeftOptions("addedLeft");
opt.saveAddedRightOptions("addedRight");
opt.saveNewLeftOptions("newLeft");
opt.saveNewRightOptions("newRight");
and here's the code from the control:
<asp:Button ID="btnMoveAll" Text=" >> " CssClass="button7" CausesValidation="false"
ONCLICK="opt.transferRight()"
runat="server" /><br />
In short, it doesn't work. I keep getting an 'opt' is not a member of the page. Can someone explain how I can properly call this code?
To invoke client Methods(javascript) use OnClientClick
<asp:Button ID="btnMoveAll" Text="" CssClass="button7" CausesValidation="false"
OnClientClick="opt.transferRight()"
runat="server" />
I have a JavaScript file using speechSynthesis.
I keep having this error:
"Cannot read property 'attachEvent' of null" in line 129:
Here it is:
speech.bind = function(event, element, callback) {
**if (element.attachEvent) {**
element.attachEvent('on'+event, callback )
} else if (window.addEventListener) {
element.addEventListener(event, callback ,false);
};
};
I will put in here the role code in here so anyone can check the entire JavaScript:
var speech_def = speech_def || {
container: "#glb-materia"
,insert_before: true
,ico: "http://edg-1-1242075393.us-east-1.elb.amazonaws.com/speech/listen_icon.jpg"
,bt_txt: "OUÇA A REPORTAGEM"
,bt_stop: "PARAR!"
,source: ".materia-conteudo"
,ignore: [
".foto-legenda"
,".frase-materia"
,"script"
,"style"
,"#speech"
,".sub-header"
,".chamada-materia"
,".data-autor"
,".box-tags"
,".saibamais"
]
};
var speech = speech || {};
//Polyfill remove()
Element.prototype.remove = function() {
this.parentElement.removeChild(this);
};
NodeList.prototype.remove = HTMLCollection.prototype.remove = function() {
for (var i = 0, len = this.length; i < len; i++) {
if(this[i] && this[i].parentElement) {
this[i].parentElement.removeChild(this[i]);
}
}
};
//Polyfill innerText
if ( (!('innerText' in document.createElement('a'))) && ('getSelection' in window) ) {
HTMLElement.prototype.__defineGetter__("innerText", function() {
var selection = window.getSelection(),
ranges = [],
str;
for (var i = 0; i < selection.rangeCount; i++) {
ranges[i] = selection.getRangeAt(i);
}
selection.removeAllRanges();
selection.selectAllChildren(this);
str = selection.toString();
selection.removeAllRanges();
for (var i = 0; i < ranges.length; i++) {
selection.addRange(ranges[i]);
}
return str;
})
}
speech.iOS = /(iPad|iPhone|iPod)/g.test( navigator.userAgent );
speech.Android = /(Android)/g.test( navigator.userAgent );
speech.include = function() {
var bt = ""
bt += '<div id="speech" '
+'title="'+speech_def.bt_txt+'" '
+'style="'
+'display: none; '
+'margin: 5px; '
+'font-size: 12px; '
+'font-style: italic; '
+'color: #bbbbbb; '
+'cursor: pointer;"'
+'>';
bt += '<img style="width: 25px; height: 25px;" src="'+speech_def.ico+'"> ';
bt += '<i style="vertical-align: top; line-height: 28px;">'+speech_def.bt_txt+'</i>';
bt += '</div>';
var button = document.createElement("SPAN");
button.innerHTML = bt;
var box = document.querySelectorAll(speech_def.container)[0];
if (speech_def.insert_before) {
box.insertBefore(button,box.firstChild);
} else {
box.appendChild(button)
};
};
speech.stop = function() {
window.speechSynthesis.cancel();
}
speech.stop();
speech.content = function() {
var result = "";
var boxes = speech_def.source.split(",");
boxes.reverse();
for (var n = boxes.length - 1; n >= 0; n--) {
var doc = document.querySelector(boxes[n]);
if (doc) {
doc = doc.cloneNode(true);
for (var i = speech_def.ignore.length - 1; i >= 0; i--) {
var els = doc.querySelectorAll(speech_def.ignore[i]);
for (var j = els.length - 1; j >= 0; j--) {
els[j].remove();
};
};
result += "." + doc.innerText;
};
};
return result;
};
speech.start_speech = function() {
var content = speech.content();
// Note: some voices don't support altering params
if (!speech.Android) speech.msg.voice = speech.voices[0];
// msg.voiceURI = 'native';
speech.msg.volume = speech.iOS?1:1; // 0 to 1
speech.msg.rate = speech.iOS?0.6:1; // 0.1 to 10
speech.msg.pitch = speech.iOS?1:1; // 0 to 2
speech.msg.text = content;
speech.msg.lang = 'pt-BR';
speech.msg.onend = function(e) {
// console.log('Finished in ' + event.elapsedTime + ' seconds.');
};
window.speechSynthesis.speak(speech.msg);
};
speech.read = function(){}; //chrome problem
speech.bind = function(event, element, callback) {
if (element.attachEvent) {
element.attachEvent('on'+event, callback )
} else if (window.addEventListener) {
element.addEventListener(event, callback ,false);
};
};
speech.click = function(e){
event.stopPropagation()
if (window.event) window.event.cancelBubble = true;
var control = document.getElementById("speech");
var label;
if (window.speechSynthesis.speaking) {
label = speech_def.bt_txt;
speech.stop();
} else {
label = speech_def.bt_stop;
speech.start_speech();
};
control.querySelector("i").innerHTML = label;
}
speech.bind_button = function() {
var control = document.getElementById("speech");
speech.bind("click",control,speech.click);
};
speech.show_button = function() {
if (!speech.on_page) {
speech.on_page = true;
speech.include();
speech.bind_button();
};
var control = document.getElementById("speech");
control.style.display="inline-block";
};
speech.test_portuguese = function() {
speech.voices = [];
window.speechSynthesis.getVoices().forEach(function(voice) {
if (voice.lang == "pt-BR") {
speech.voices.push(voice);
};
});
if (speech.Android) {
var control = document.getElementById("speech");
var complement = (speech.voices.length > 0)?"*":"";
// control.querySelector("i").innerHTML = "OUÇA A REPORTAGEM"+complement;
return true;
} else {
return (speech.voices.length > 0);
};
};
speech.start = function() {
if ('speechSynthesis' in window) {
speech.msg = new SpeechSynthesisUtterance();
if (speech.test_portuguese()) {
speech.show_button();
} else {
window.speechSynthesis.onvoiceschanged = function() {
if (speech.test_portuguese()) {
speech.show_button();
};
};
};
speech.bind_button();
};
};
speech.start();
speech.bind("load",window,speech.start)
How can i solve this problem?
Thanks so much.
The problem is that element is null at that point.
Probably, because there is no element with id="speech", so control in null in this code:
speech.bind_button = function() {
var control = document.getElementById("speech");
speech.bind("click",control,speech.click);
};
I have a 'jargon buster' on my site that uses an xml file to load an A-Z of words which when clicked display a brief short explanation of each word. This works fine in all browsers bar the latest ie's which i get an 'undefined' error with. The jscript im using is below
Jargon = {
xmlfile: 'http://www.mysite.com/jargon.xml',
xml: null,
wordHolder: 'words',
defHolder: 'definition',
idprefix: 'jargon_',
selected: null,
init: function () {
var con = Jargon.xhcon();
Jargon.wordHolder = $(Jargon.wordHolder);
Jargon.defHolder = $(Jargon.defHolder);
if (!con || !Jargon.wordHolder || !Jargon.defHolder) {
return;
}
function conComplete(oXML) {
Jargon.xml = oXML.responseXML;
//Jargon.showWords('a');
}
con.connect(Jargon.xmlfile, 'GET', Math.random(), conComplete);
},
showWords: function (c) {
if (Jargon.selected) {
Jargon.selected.className = '';
}
var words = Jargon.getWords(c);
while (Jargon.wordHolder.childNodes.length > 0) {
Jargon.wordHolder.removeChild(Jargon.wordHolder.childNodes[0]);
}
while (Jargon.defHolder.childNodes.length > 0) {
Jargon.defHolder.removeChild(Jargon.defHolder.childNodes[0]);
}
for (var i = 0; i < words.length; i++) {
var o = document.createElement('a');
o.href = 'javascript:Jargon.showDef(\'' + words[i].id + '\');';
o.id = Jargon.idprefix + words[i].id;
//o.onclick = Jargon.showDef;
o.appendChild($t(words[i].name));
Jargon.wordHolder.appendChild(o);
Jargon.wordHolder.appendChild(document.createElement('br'));
}
if (!words.length) {
var o = document.createElement('p');
var s = 'There are no words for the letter ' + c.toUpperCase();
Jargon.wordHolder.appendChild(o.appendChild($t(s)));
}
},
showDef: function (id) {
var o = $(Jargon.idprefix + id);
if (Jargon.selected) {
Jargon.selected.className = '';
}
if (o) {
o.className = 'selected';
Jargon.selected = o;
}
var defobjs = Jargon.getDef(id);
while (Jargon.defHolder.childNodes.length > 0) {
Jargon.defHolder.removeChild(Jargon.defHolder.childNodes[0]);
}
var heading = document.createElement('span');
heading.className = "jargtitle";
heading.appendChild(document.createTextNode(defobjs[1][0].textContent));
Jargon.defHolder.appendChild(heading);
var definition = document.createElement('span');
definition.className = "jargdefinition";
definition.appendChild(document.createTextNode(defobjs[0][0].textContent));
Jargon.defHolder.appendChild(definition);
},
getWords: function(c) {
var x = Jargon.xml;
var letters = x.getElementsByTagName('letter');
var oLetter = null;
for (var i = 0; i < letters.length; i++) {
if (letters[i].getAttribute('id') == c) {
oLetter = letters[i];
break;
}
}
if (!oLetter) {
return [];
}
var words = [];
for (i = 0; i < oLetter.childNodes.length; i++) {
var oJargon = oLetter.childNodes[i];
if (oJargon.nodeName == 'jargon') {
var s = Jargon.getName(oJargon);
words[words.length] = {
id: oLetter.childNodes[i].getAttribute('id'),
name: s
};
}
}
return words;
},
getDef: function (id) {
var x = Jargon.xml;
var j = null;
var temp = new Array(2);
var jargons = x.getElementsByTagName('jargon');
for (var i = 0; i < jargons.length; i++) {
if (jargons[i].getAttribute('id') == id) {
j = jargons[i];
break;
}
}
if (!j) {
return [];
}
//return [];
for (i = 0; i < j.childNodes.length; i++) {
if (j.childNodes[i].nodeName == 'name') {
temp[1] = j.childNodes[i].childNodes;
}
}
for (i = 0; i < j.childNodes.length; i++) {
if (j.childNodes[i].nodeName == 'desc') {
temp[0] = j.childNodes[i].childNodes;
}
}
//return [];
return temp;
},
cloneNode: function (oldNode, deep) {
deep = (deep) ? true : false;
// a replacement to the normal dom clone node
// this will copy xml nodes to html nodes
// which can then be inserted into the document
// scope in all browsers
// See for for the bug http://www.quirksmode.org/blog/archives/2005/12/xmlhttp_notes_c.html
var newNode = null;
if (oldNode.nodeType == '3') {
// textnode
newNode = $t(oldNode.nodeValue);
}
else if (oldNode.nodeType == '1') {
// element node
newNode = document.createElement(oldNode.nodeName);
if (deep) {
for (var i = 0; i < oldNode.childNodes.length; i++) {
newNode.appendChild(Jargon.cloneNode(oldNode.childNodes[i], true));
}
}
}
return newNode;
},
getName: function (oJargon) {
for (var i = 0; i < oJargon.childNodes.length; i++) {
if (oJargon.childNodes[i].nodeName == 'name') {
var oName = oJargon.childNodes[i];
var s = '';
for (var j = 0; j < oName.childNodes.length; j++) {
if (oName.childNodes[j].nodeType == 3) {
// text node
s += oName.childNodes[j].nodeValue;
}
}
return s;
}
}
return '';
},
xhcon: function () {
var xmlhttp, bComplete = false;
try { xmlhttp = new ActiveXObject("Msxml2.XMLHTTP"); }
catch (e) { try { xmlhttp = new ActiveXObject("Microsoft.XMLHTTP"); }
catch (e) { try { xmlhttp = new XMLHttpRequest(); }
catch (e) { xmlhttp = false; }}}
if (!xmlhttp) {
return null;
}
this.connect = function(sURL, sMethod, sVars, fnDone) {
if (!xmlhttp) {
return false;
}
bComplete = false;
sMethod = sMethod.toUpperCase();
try {
if (sMethod == "GET") {
xmlhttp.open(sMethod, sURL+"?"+sVars, true);
sVars = "";
}
else {
xmlhttp.open(sMethod, sURL, true);
xmlhttp.setRequestHeader("Method", "POST "+sURL+" HTTP/1.1");
xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
}
xmlhttp.onreadystatechange = function() {
if (xmlhttp.readyState == 4 && !bComplete) {
bComplete = true;
fnDone(xmlhttp);
}
};
xmlhttp.send(sVars);
}
catch(z) { return false; }
return true;
};
return this;
}
}
In terms of how im calling the jscript im using <li>a</li>
which loads a list of all items that begin with f then when i click one of items from that list say "Fiduciary" it triggers javascript:Jargon.showDef('f1'); which in turns loads the and into a definition div
however in ie9 it displays "undefined" . It works in all other browers
Example of the XML below:
<letter id="f"> -<jargon id="f1"> <name>Fiduciary</name> <desc>in a position of trust. This includes people such as trustees looking after trust assets for the beneficiaries and company directors running a company for the shareholders' benefit.</desc> </jargon> -<jargon id="f2"> <name>Forfeiture</name> <desc>the loss of possession of a property because the tenancy conditions have not been met by the tenant.</desc> </jargon> -<jargon id="f3"> <name>Freehold</name> <desc>describing land that only the owner has any rights over.</desc> </jargon> -<jargon id="f4"> <name>Free of encumbrances</name> <desc>no one else having any rights over something. When property is owned by someone and nobody else has any rights over it, it is owned free of encumbrances.</desc> </jargon> </letter>
Few addons are not compatible with mine, so how to detect their presence and inform the user.
Thanks
OK got it here is how this is done :
function isExtEnabled(){
if(!Application.extensions.has('EXTENSION_ID_HERE')) {
return false;
}
return true;
}
Here is an example from the evil noscript-1.9.2.xpi which modified adblock plugin settings
function MRD(ns) {
this.enabled = ns.getPref("mrd", true);
if (!this.enabled) return;
var c = CC[this.id];
if (c) {
this.ns = ns;
this.c = c.createInstance().wrappedJSObject;
this._w._mrd = this;
var eh = this.c["elemhide"];
eh.watch("url", this._w);
eh.apply();
ns.mrd = this;
ns.initContentPolicy();
} else this.enabled = false;
}
MRD.prototype = {
id: "#mozilla.org/adblockplus;1",
_nobind: "{-moz-binding: none !important}",
_ms: null,
_w: function(p, o, n) {
if (!n) return n;
var mrd = arguments.callee._mrd;
var u = decodeURIComponent(n.spec);
var mm = u.match(/#-moz-document\s+domain[^\)]*?(?:(?:noscript|flashgot|hackademix)\.net|informaction\.com|googlesyndication\.com)[^\}]*\}/g);
if (mm) {
var ns = mrd.ns;
mrd._ms = mm.join('').replace(/(\{[^\{\}]*)\{[^\}]*/g, '$1' + mrd._nobind);
}
/*
var uu = n.spec.split(',');
uu[1] = encodeURIComponent(decodeURIComponent(uu[1]).replace(/#-moz-document\s+domain[^\)]*?(?:(?:noscript|flashgot|hackademix)\.net|informaction\.com|googlesyndication\.com)[^\}]*\}/g, ''));
n.spec = uu.join(',');
*/
mrd.ns.delayExec(function() { mrd.apply(); }, 0);
return n;
},
_dd: function(a, s) {
return "#-moz-document domain(" + a.join("),domain(") + "){" + s + "} ";
},
get _def() {
delete this.__proto__._def;
return this.__proto__._def = this.ns.prefService.getDefaultBranch(this.ns.prefs.root).getCharPref("default");
},
get _wl() {
delete this.__proto__._wl;
return this.__proto__._wl = this._def.match(/\w+[^r].\.n\w+|in\w+on\.c\w+/g).concat(this.ns.getPref("xblHack", "").split(/\s+/));
},
get _wlrx() {
delete this.__proto__._wlrx;
return this.__proto__._wlrx = new RegExp("^(?:[\\w\\-\\.]*\\.)?(?:" + this._wl.join("|").replace(/\./g, "\\.").concat(")$"));
},
get _es() {
delete this.__proto__._es;
try {
var ss = [], lastS = '';
for(var j = 0; j < 5; j++) {
ss.push(lastS += " #k" + j);
}
es = this._dd(this._wl, ss.join(' *,') + ' *' + this._nobind) +
this._dd(this._def.match(/\w+[^r].\.n\w+|\w+on\.c\w+/g), "#a\u0064s, #\u0061ds .ad" + this._nobind);
} catch (e) {
if (this.ns.consoleDump) this.ns.dump("MRD ES Error: " + e);
}
return this.__proto__._es = es;
},
apply: function() {
var ns = this.ns;
for each(var s in [this._es, this._ms]){
if (s) {
ns.updateStyleSheet(s, false);
ns.updateStyleSheet(s, true);
}
}
},
attach: function() {
if (!this.enabled) return false;
try {
var p = this.c.policy;
var ns = this.ns;
var wlrx = this._wlrx;
if (!wlrx) return false;
ns._mrd_shouldLoad = ns.shouldLoad;
ns.shouldLoad = function(ct, cl, ro, ctx, mm, internal) {
if (!internal) try {
var w = ctx && (ctx.defaultView || ctx.ownerDocument && ctx.ownerDocument.defaultView || ctx);
if (w) {
l = w.top.location;
if (!(/^https?/.test(l.protocol) && wlrx.test(l.hostname))) {
var res = p.shouldLoad(ct, cl, ro, ctx, mm, internal);
if (res != CP_OK) return res;
}
}
} catch(e) {
if (ns.consoleDump) ns.dump(e);
}
return ns._mrd_shouldLoad(ct, cl, ro, ctx, mm, internal);
};
} catch(e) {
if (this.ns.consoleDump) this.ns.dump("MRD Attach Error: " + e);
return false;
}
return true;
}
}