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Search strings of an array in content of several div referenced by class and perform action depending on the condition

I have this basic code for the development of what I need, who can help me is a lot of help for me !!
note: I used the function .search () and replace () without getting good results, I do not know what else way to take
var fjstr = document.getElementsByClassName("js-product-variants-list");
var fjinnerColor = '';
var fjscolor2 = ["Rojo-Wengue",
"Aqua-Natural",
"Gris/Decape",
"Rosa-Blanco",
"Turqueza-Wengue",
"Turqueza-Blanco",
"Naranja-Natural",
"Amarillo-Natural"];
var resultado = "";
var pos = -1
fjscolor2.forEach(function(element) {
pos = fjstr.innerHTML.search(element.toString());
if(pos!=-1){
resultado += "<a href='#" + (fjscolor[i]) + "' ><li class='fj-product-color-icon' id='color-" + (fjscolor[i]) + "'></li></a>"
document.getElementsByClassName('cont-product-variacion-color')[0].firstElementChild.innerHTML = resultado;
}
});

Locate Existing Numbers For Hyperlink In Textarea Set Next Avaibale One On Save / Click Modal

I am using CodeIgniter & jQuery and parsedown/markdown When I open my bootstrap modal, it allows me to create a new Reference-style link like on here.
I am trying to be able to find some how where it can find the next free number for my available in my textarea and when click save in model will set it.
I am fine [exmple-1][1] and [example-3][3]
[1]: http://www.example.com
[3]: http://www.example.com
And when I open my bootstrap modal and create a new hyperlink it will set and add the next available number
Here is the Codepen Example
Question: How can I when I create a new hyperlink in my bootstrap modal
and click save it can find the next available number set it. Because only 1 & 3 are set in example above next one should be 2 when click save in model
currently as you can see below I just use var counter = 1; and counter++; to be able to create numbers.
Script:
$('#myLink').on('shown.bs.modal', function() {
var text = getSelectedText();
$('#title').val(text.trim());
$('#url').val('http://');
});
function getSelectedText() {
var textarea = document.getElementById("message");
var len = textarea.value.length;
var start = textarea.selectionStart;
var end = textarea.selectionEnd;
var sel = textarea.value.substring(start, end);
return sel;
}
var counter = 1;
$('#save-link').on('click', function(e) {
var textarea = document.getElementById("message");
var len = textarea.value.length;
var start = textarea.selectionStart;
var end = textarea.selectionEnd;
var sel = textarea.value.substring(start, end);
var replace = '[' + $('input#title').val() + ']' + '[' + counter + ']';
var id = '\n [' + counter + ']: ' + $('input#url').val();
counter++;
if ($('#title').val().length > 0) {
textarea.value = textarea.value.substring(0,start) + replace +
textarea.value.substring(end,len) + ' \n' + id;
$('#myLink').modal('hide');
//$('#myLink form')[0].reset();
} else {
return false;
}
});

You can use a simple regex to find the used numbers in the textarea:
function findAvailableNumber(textarea){
//Find lines with links
var matches = textarea.value.match(/(^|\n)\s*\[\d+\]:/g);
//Find corresponding numbers
var usedNumbers = matches.map(function(match){
return parseInt(match.match(/\d+/)[0]); }
);
//Find first unused number
var number = 1;
while(true){
if(usedNumbers.indexOf(number) === -1){
//Found unused number
return number;
}
number++;
}
return number;
}
Add the function, remove the line var counter = 1; and replace counter++; with var counter = findAvailableNumber(textarea);
JSFiddle

As Barmar said: store your already generated numbers in an object or an array and check for the next non-existing number:
var existingNumbers = [1, 3];
function getNextNumber() {
var i = 1;
while (existingNumbers.indexOf(i) > - 1) {
i++;
}
existingNumbers.push(i);
return i;
}
Then get the next number with:
var number = getNextNumber();

How to find the number of form elements that are getting passed to e.parameter in GAS?

In Google App Scripts (GAS), I want to be able to add and remove TextBox and TextArea elements to a FlexTable (that's being used as a form) and not worry about how many there are. I've named the text elements based on a counter to make this process easier.
So, is there a way to get the number of inputs (TextBox + TextArea) passed to e.parameter after the form is submitted?
Here's the relevant code from the FlexTable:
function doGet() {
var app = UiApp.createApplication();
var flex = app.createFlexTable().setId('myFlex');
var counter = 0;
var row_counter = 0;
...
var firstnameLabel = app.createLabel('Your FIRST Name');
var firstnameTextBox = app.createTextBox().setWidth(sm_width).setName('input' + counter).setText(data[counter]);
flex.setWidget(row_counter, 1, firstnameLabel);
flex.setWidget(row_counter, 2, firstnameTextBox);
row_counter++;
counter++;
var lastnameLabel = app.createLabel('Your LAST Name');
var lastnameTextBox = app.createTextBox().setWidth(sm_width).setName('input' + counter).setText(data[counter]);
flex.setWidget(row_counter, 1, lastnameLabel);
flex.setWidget(row_counter, 2, lastnameTextBox);
row_counter++;
counter++;
...
var submitButton = app.createButton('Submit Proposal');
flex.setWidget(row_counter, 2, submitButton);
var handler = app.createServerClickHandler('saveProposal');
handler.addCallbackElement(flex);
submitButton.addClickHandler(handler);
var scroll = app.createScrollPanel().setSize('100%', '100%');
scroll.add(flex);
app.add(scroll);
return app;
}
And here's the code for the ClickHandler (notice that I currently have 39 elements in my FlexTable):
function saveProposal(e){
var app = UiApp.getActiveApplication();
var userData = [];
var counter = 39;
for(var i = 0; i < counter; i++) {
var input_name = 'input' + i;
userData[i] = e.parameter[input_name];
}
So, is there a way to get the number of elements (in this case 39) without manually counting them and assigning this value to a variable?
I'm new at this stuff and I'd appreciate your help.
Cheers!

The simplest way is to add a hidden widget in your doGet() function that will hold the counter value like this :
var hidden = app.createHidden('counterValue',counter);// don't forget to add this widget as a callBackElement to your handler variable (handler.addCallBackElement(hidden))
then in the handler function simply use
var counter = Number(e.parameter.counterValue);// because the returned value is actually a string, as almost any other widget...
If you want to see this value while debugging you can replace it momentarily with a textBox...

You can search for arguments array based object.
function foo(x) {
console.log(arguments.length); // This will print 7.
}
foo(1,2,3,4,5,6,7) // Sending 7 parameters to function.

You could use a while loop.
var i = 0;
var userData = [];
while (e.parameter['input' + i] != undefined) {
userData[i] = e.parameter['input' + i];
i++;
};
OR:
var i = 0;
var userData = [];
var input_name = 'input0';
while (e.parameter[input_name] != undefined) {
userData[i] = e.parameter[input_name];
i++;
input_name = 'input' + i;
};

Variable of a function are shared between different instance of that same function,my variable a'rent local to it's instance?

I made a function to add <a> tag in chat text and it worked fine, but it seems the variables of the function are shared between different instances of the function called from different chat rooms. I thought function variable were local, can anyone explain why I'm encountering this problem? Well I found out the code was wrong and a <p> tag the ajax function was adding to the string was interfering with this function. i fixed it by adding a space before the conflicting <p> tag and now it works fine...updated the code with english variable names too :)
function ajoutertagdelien(dataChat)
{
if (dataChat)
{
}
else
{
dataChat = " ";
}
var chatsendvar = dataChat;
var linkLocation, chatStringLeftPiece, chatfinal = "", chatStringRightPiece, lienfin, LinkAlone, LinktagString, LinkPiece;
var linkTagA = new Array();
var variablelocation = new Array();
var variablechatsend = new Array();
var increment=0;
var earlierLinkLength = 0;
linkLocation = chatsendvar.indexOf("www.");
while (linkLocation != -1) {
increment++;//
if (linkLocation != -1)
{
chatStringLeftPiece = chatsendvar.substring(0,linkLocation);
LinkPiece = chatsendvar.slice(linkLocation,chatsendvar.length);
lienfin = LinkPiece.indexOf(" ");
LinkAlone = LinkPiece.substring(0,lienfin);
chatStringRightPiece = chatsendvar.substring(((lienfin + linkLocation)),chatsendvar.length) ;
console.log( chatStringLeftPiece + " droit et gauche " + chatStringRightPiece + " number of theloop in the while=" + increment);
LinktagString = "<a target='_blank' href='http://"+ LinkAlone+"'>"+LinkAlone+"</a>";
chatsendvar = chatStringLeftPiece + " " + chatStringRightPiece;
linkTagA.push(LinktagString);
variablelocation.push(chatStringLeftPiece.length + earlierLinkLength);
earlierLinkLength = earlierLinkLength + LinktagString.length +1;
}
linkLocation = chatsendvar.indexOf("www.");
}
for (var x = 0, j = linkTagA.length; x<j; x++) {
chatsendvar = chatsendvar.split('');
chatsendvar.splice((variablelocation[x]),1," "+linkTagA[x]+" ");
chatsendvar = chatsendvar.join('');
};
return chatsendvar;
}

All this code to detect links in a text?
I know that's not what you asked, but this small function can do this. It can detect links beginning with www. or http:// and even handles url parameters, like ?a=1&b=2. Here is a demo fiddle.
The regex could be modified to handle https:// or url encoding for example, but you get my point.
function makeLinks(text) {
return text.replace(/(?:http:\/\/|(www\.))([\w\d.\/\?&=]+)/gi, '<a target="_blank" href="http://$1$2">$1$2</a>');
}

Get Next and Previous Elements in JavaScript array

I have a large array, with non-sequential IDs, that looks something like this:
PhotoList[89725] = new Array();
PhotoList[89725]['ImageID'] = '89725';
PhotoList[89725]['ImageSize'] = '123';
PhotoList[89726] = new Array();
PhotoList[89726]['ImageID'] = '89726';
PhotoList[89726]['ImageSize'] = '234';
PhotoList[89727] = new Array();
PhotoList[89727]['ImageID'] = '89727';
PhotoList[89727]['ImageSize'] = '345';
Etc....
I'm trying to figure out, given an ID, how can I can get the next and previous ID... So that I could do something like this:
<div id="current">Showing You ID: 89726 Size: 234</div>
Get Prev Get Next
Obviously, if we're at the end or beginning of the array we just a message...

Why don't you add properties 'Prev' & 'Next' to that array?
PhotoList[89725] = new Array();
PhotoList[89725]['Prev'] = 89724;
PhotoList[89725]['Next'] = 89726;
PhotoList[89725]['ImageID'] = '89725';
PhotoList[89725]['ImageSize'] = '123';
This is just 'doubly-linked list' data structure.

Based on your example the IDs are sequential...
This is another way of writing your example. new Array() really isn't what you should be using because those are objects you are creating. Also, I left the numbers as strings, but I'm not sure why you would want to do that. You could add next and prev like kuy suggested
PhotoList[89725] = {ImageID: '89725',
ImageSize: '123'};
PhotoList[89725] = {ImageID: '89726',
ImageSize: '234',
Next: '89727',
Prev: '89725'};
PhotoList[89725] = {ImageID: '89727',
ImageSize: '345'};
All of these are accessible just like your other structure.

There's really no way other than to iterate through the possible ids sequentially until you find one which has an entry in your array. For example:
function findClosest(arr, id, increasing) {
var step = increasing ? 1 : -1;
for(var i=id+step; i>=0 && i<=max_id; i+=step)
if( arr[id] )
return id;
}
Obviously, this approach requires that you keep track of the max_id so that you don't iterate forever; here I assume that it's a global variable, but you might want to make it a parameter to the findClosest function. You'd call this function like so:
var prev = findClosest(arr, id, false);
var next = findClosest(arr, id, true);

I agree with the rest quotes you should be using objects not an array. Also make sure you create new arrays using the literal notation and not the new keyword with built in types. The new keyword is bad news and you could clobber the global object. Check out JSLint.
var a = new Array(); //bad dont use
var a = []; //this is the best way to create a new array
var o = {}; //create new objects like this
As for the problem at hand. Why not write a simple container that has its own internal counter?
function PhotoListContainer(PhotoList)
{
if(PhotoList === undefined)
throw("no photo list");
this.counter = 0;
var self = this;
this.current = function(){
return PhotoList[self.counter];
};
this.next = function(){
return PhotoList[self.counter + 1];
};
this.prev = function(){
return PhotoList[self.counter - 1];
};
// You could even write a function that loops each value from the current counter :)
this.each_from_counter = function(callback){
for(var i = self.counter; i < PhotoList.length; i++)
{
callback(PhotoList[i], i);
self.counter++;
}
};
}
//use
var pc = new PhotoListContainer(PhotoList);
pc.counter = 500;
pc.next(); //returns the 501st object
pc.prev(); //returns the 499th object
pc.each_from_counter(function(photo, index){
photo.somehting;
});

No arrays at all are better..
images = {
0: {
size: 12345, /* dont realy need as you can use JS to mesure the size. */
title: "day 1 on holiday"
},
1: {
size: 13549, /* dont realy need as you can use JS to mesure the size. */
title: "day 2 on holiday"
},
2: {
size: 16548, /* dont realy need as you can use JS to mesure the size. */
title: "day 3 on holiday"
},
}
for(x in images){
/* x = "the id of the image." */
url[] = "/images/" + x + ".png";
title[] = images[x].title;
size[] = images[x].size;
console.log("File: " + url[x] + " , Title: " + title[x] + " , Size: " + size + "bytes")
}

var sibNum = 0;
var sibList = [];
var prevSiblingID = false;
for (n in w) {
sibNum++;
sibList[n] = {
title : n,
prevSiblingID : prevSiblingID
};
if (prevSiblingID) {
sibList[prevSiblingID].nextSiblingID = n;
}
prevSiblingID = n;
};
sibList[prevSiblingID].nextSiblingID = false;

you can use grep function and calculate prev or next item of specified array:
object = $.grep(data, function(e) {
if(e.id == yourId) {
return data[data.indexOf(e) + 1]; // or -1 for prev item
}
});

i think your image list will come from DB so you may can try this code, this code is working for me.
<?
$prev="";
$next="";
$cur=0;
$i=0;
$pid=$_GET['pid'];
while($rowcon=mysql_fetch_assoc($result))
{
$arr[$i]=$rowcon['pid'];
if($rowcon['pid']==$pid)
{
$cur=$i;
}
$i++;
}
if($cur<$num_rows)
$next=$arr[$cur+1];
else
$next="";
if($cur>0)
$prev=$arr[$cur-1];
else
$prev="";
echo $prev." ".$cur." ".$next;
?>