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How can i append a child to a div that has a random number as an id?

READ THE EDIT AT THE BOTTOM! :)
I am making a little website where the user can fill in multiple text boxes, and when they come back later, their text boxes come back. (Pretty much a terrible helpdesk system using localstorage).
I have three fields the user can fill out, then when the fields are submitted they should appear below, in a div. Currently i am only able to get the first field to be shown, as i append it to a static div, but i want to append the rest of the fields to the first one. This wouldnt be too hard, but i cant seem to append a child to a div that doesnt have a set ID (without somehow hardcoding it).
I have tried things like
divAId + i.appendChild(divB)
And
var divAIdNumber = divAId + i;
divAIdNumber.appendChild(divB);
, but nothing seems to work.
Here is the code in question:
gradStorages = JSON.parse(localStorage.getItem('gradStorages'));
var iFeil = 0;
function feilDivCreate(){
const divF = document.createElement("div");
divF.className = "feilDiv";
divF.id = "feilDivId" + iFeil;
listIdIncrement();
divF.appendChild(document.createTextNode(set1));
textContainer2.appendChild(divF);
iFeil += 1;
}
var iOffer = 0;
var feilIdNumber = "feilId";
function offerDivCreate(){
const divO = document.createElement("div");
divO.className = "offerDiv";
divO.id = "offerDivId" + iOffer;
listIdIncrement();
divO.appendChild(document.createTextNode(set1));
feilIdNumber + iOffer.appendChild(divO);
iOffer += 1;
console.log(feilIdNumber + "TATATATAT");
}
var set1 = "set1 Not Defined";
var set2 = "set2 Not Defined";
var set3 = "set3 Not Defined";
function extract(){
for(let i = 0; i < feilStorages.length; i++){
set1 = feilStorages[i];
set2 = offerStorages[i];
set3 = gradStorages[i];
feilDivCreate();
offerDivCreate();
gradDivCreate(); // same as offerDiv
}
}
(can add more, or make a jsfiddle if needed.)
I need a way to append offerDiv to feilDiv, but its not so simple because feilDiv's id is feilDivId + i where i goes up by one for each new feildiv added.
Any tips for how i can achieve this?
EDIT: Here is a simplified version, showing all the code necessary to understand what im trying to do. https://codepen.io/kossi1337/pen/xxKPRvv
Might be easier to just make a new question with all the new code, but im not too sure if that allowed.. Let me know if i have to change anything about my question :)

In this code:
var divAIdNumber = divAId + i;
divAIdNumber.appendChild(divB);
It seems like you are trying to append an element to the Integer value you just created by adding i to some number. You need to grab the parent node, either via document.querySelector or using jQuery, then append to the parent. The browser has no idea what to do when you try to append markup to a number. It expects a DOM location that it will be appended to.
It should be like this:
var divAIdNumber = divAId + i;
var html = "<div class='" + divAIdNumber + "'> Content here </div>";
var element = document.querySelector(".my-element");
element.appendChild(html);

Javascript - How can I replace text in HTML with text in script

I am new to javascript. I was thinking getelementbyid but i don't know how to make it work
Like the title, here is what I mean
For example I have in HTML:
<p>fw_93</p>
<p>fw_94</p>
<p>fw_93</p>
So what I want is to make script to replace those fw_93 fw_94 to what I want.
For example
Instead of displaying "fw_93" I want it to display "9.3". Same with fw_94 to 9.4

Replace fw_ with nothing, divide the number by 10:
Array.prototype.forEach.call(document.getElementsByTagName('p'), function(el) {
el.innerHTML = parseInt(el.innerHTML.replace(/[A-Za-z_]*/, '')) / 10;
});
<p>fw_93</p>
<p>fw_94</p>
<p>fw_93</p>

Okay so select the tags.
Loop over the collection
read the html
match the string
replace the html
var ps = document.querySelectorAll("p");
for (var i=0; i<ps.length; i++) {
var p = ps[i];
var txt = p.innerHTML; //.textContent
var updated = txt.replace(/.+(\d)(\d)/, "$1.$2");
p.innerHTML = updated;
}
<p>fw_93</p>
<p>fw_94</p>
<p>fw_93</p>

Using JQuery
Not sure why I did it with JQuery, guess I wasn't paying enough attention. No point in me re-writing as there are already good answers in JS. Though I will leave this in case it's of use to anyone that is using JQuery.
You can loop though each <p> element and covert the contents, something like this:
$("p").each(function() {
var text = $(this).html();
var text = text.substring(text.indexOf("_") + 1);
var text = text[0] + "." + text.substring(1);
$(this).html(text);
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<p>fw_93</p>
<p>fw_94</p>
<p>fw_93</p>
You may need to add validation depending on how reliable your input is.
Note that the code makes the following assumptions:
There will always be a _ followed by at least 2 digits
The . will always go after the first digit

Your HTML:
<p id="p1">init_value</p>
Your JS:
document.getElementById("p1").innerHTML = "new_value";

setAttribute not working

I am making a plugin for form validation as practice, but for some reason after I create a h2 element and try to set it's attribute, it is not working. Here is the code
var testing = function(regex, value, error_msg, error_msg_field_id){
var pattern = new RegExp(regex);
if (!pattern.test(value)){
var ele = document.createElement("H2");
var node = document.createTextNode(error_msg);
ele.setAttribute('style', 'color:white');
alert("hi");
jQuery(error_msg_field_id).append(node);
}
}
the text appears with no problem, but it is not in white color. This make no sense at all to me

You are using setAttribute correctly, but you are setting the property on your h2-element, which is never actually inserted in your DOM.
You can change and simplify the relevant section of your code to:
var ele = document.createElement("H2");
ele.textContent = error_msg;
ele.setAttribute('style', 'color:white');
jQuery(error_msg_field_id).append(ele);
The usage of jQuery here is also not necessary. You can simply use
document.querySelector("#" + error_msg_field_id).appendChild(ele);
which is equally simple.

How to add / insert / update text inside contenteditable div at a particular position?

The HTML code looks like this
<div id="txtarea" contenteditable="true">Some text</div>
I have to insert some new text based on some event at a particular position in the above div.
The event calls the function say updateDiv(txt, positon). For example it says
updateDiv("more ",5);
So the div should become be
<div id="txtarea" contenteditable="true">Some more text</div>
I tried a lot of javascript and jquery but nothing seem to work.

If the content of your editable <div> always consists of a single text node, this is relatively simple and you can use the code below.
var div = document.getElementById("txtarea");
var textNode = div.firstChild;
textNode.data = textNode.data.slice(0, 5) + "more " + textNode.data.slice(5);
Otherwise, you'll need to read about DOM Ranges (note that they are not supported in IE < 9) and use something like this answer to create a range corresponding to character indices within the content and then use insertNode().
var div = document.getElementById("txtarea");
var range = createRangeFromCharacterIndices(div, 5, 5);
range.insertNode(document.createTextNode("more "));

Here's how I did it:
var position = 5,
txt = "more ";
var current = $("#txtarea").html();
//alert(current.substring(0, position))
var endVal = current.substring(position);
var newValue = current.substring(0, position) + txt + endVal;
$("#txtarea").html(newValue);​
jsfiddle displaying it 'in action'.
Edit: Updated the jsfiddle with the approach listed in a comment above to this post. Pretty slick!

use this function :
String.prototype.splice = function( position, newstring ) {
return (this.slice(0,position) + newstring + this.slice(position));
};
and use this function as :
var oldstr=$('#txtarea').html();
var newstr='more';
var position = 5;
$('#txtarea').html(oldstr.splice(position , newstr);

Clean Microsoft Word Pasted Text using JavaScript

I am using a 'contenteditable' <div/> and enabling PASTE.
It is amazing the amount of markup code that gets pasted in from a clipboard copy from Microsoft Word. I am battling this, and have gotten about 1/2 way there using Prototypes' stripTags() function (which unfortunately does not seem to enable me to keep some tags).
However, even after that, I wind up with a mind-blowing amount of unneeded markup code.
So my question is, is there some function (using JavaScript), or approach I can use that will clean up the majority of this unneeded markup?

Here is the function I wound up writing that does the job fairly well (as far as I can tell anyway).
I am certainly open for improvement suggestions if anyone has any. Thanks.
function cleanWordPaste( in_word_text ) {
var tmp = document.createElement("DIV");
tmp.innerHTML = in_word_text;
var newString = tmp.textContent||tmp.innerText;
// this next piece converts line breaks into break tags
// and removes the seemingly endless crap code
newString = newString.replace(/\n\n/g, "<br />").replace(/.*<!--.*-->/g,"");
// this next piece removes any break tags (up to 10) at beginning
for ( i=0; i<10; i++ ) {
if ( newString.substr(0,6)=="<br />" ) {
newString = newString.replace("<br />", "");
}
}
return newString;
}
Hope this is helpful to some of you.

You can either use the full CKEditor which cleans on paste, or look at the source.

I am using this:
$(body_doc).find('body').bind('paste',function(e){
var rte = $(this);
_activeRTEData = $(rte).html();
beginLen = $.trim($(rte).html()).length;
setTimeout(function(){
var text = $(rte).html();
var newLen = $.trim(text).length;
//identify the first char that changed to determine caret location
caret = 0;
for(i=0;i < newLen; i++){
if(_activeRTEData[i] != text[i]){
caret = i-1;
break;
}
}
var origText = text.slice(0,caret);
var newText = text.slice(caret, newLen - beginLen + caret + 4);
var tailText = text.slice(newLen - beginLen + caret + 4, newLen);
var newText = newText.replace(/(.*(?:endif-->))|([ ]?<[^>]*>[ ]?)|( )|([^}]*})/g,'');
newText = newText.replace(/[·]/g,'');
$(rte).html(origText + newText + tailText);
$(rte).contents().last().focus();
},100);
});
body_doc is the editable iframe, if you are using an editable div you could drop out the .find('body') part. Basically it detects a paste event, checks the location cleans the new text and then places the cleaned text back where it was pasted. (Sounds confusing... but it's not really as bad as it sounds.
The setTimeout is needed because you can't grab the text until it is actually pasted into the element, paste events fire as soon as the paste begins.

How about having a "paste as plain text" button which displays a <textarea>, allowing the user to paste the text in there? that way, all tags will be stripped for you. That's what I do with my CMS; I gave up trying to clean up Word's mess.

You can do it with regex
Remove head tag
Remove script tags
Remove styles tag
let clipboardData = event.clipboardData || window.clipboardData;
let pastedText = clipboardData.getData('text/html');
pastedText = pastedText.replace(/\<head[^>]*\>([^]*)\<\/head/g, '');
pastedText = pastedText.replace(/\<script[^>]*\>([^]*)\<\/script/g, '');
pastedText = pastedText.replace(/\<style[^>]*\>([^]*)\<\/style/g, '');
// pastedText = pastedText.replace(/<(?!(\/\s*)?(b|i|u)[>,\s])([^>])*>/g, '');
here the sample : https://stackblitz.com/edit/angular-u9vprc

I did something like that long ago, where i totally cleaned up the stuff in a rich text editor and converted font tags to styles, brs to p's, etc, to keep it consistant between browsers and prevent certain ugly things from getting in via paste. I took my recursive function and ripped out most of it except for the core logic, this might be a good starting point ("result" is an object that accumulates the result, which probably takes a second pass to convert to a string), if that is what you need:
var cleanDom = function(result, n) {
var nn = n.nodeName;
if(nn=="#text") {
var text = n.nodeValue;
}
else {
if(nn=="A" && n.href)
...;
else if(nn=="IMG" & n.src) {
....
}
else if(nn=="DIV") {
if(n.className=="indent")
...
}
else if(nn=="FONT") {
}
else if(nn=="BR") {
}
if(!UNSUPPORTED_ELEMENTS[nn]) {
if(n.childNodes.length > 0)
for(var i=0; i<n.childNodes.length; i++)
cleanDom(result, n.childNodes[i]);
}
}
}

This works great to remove any comments from HTML text, including those from Word:
function CleanWordPastedHTML(sTextHTML) {
var sStartComment = "<!--", sEndComment = "-->";
while (true) {
var iStart = sTextHTML.indexOf(sStartComment);
if (iStart == -1) break;
var iEnd = sTextHTML.indexOf(sEndComment, iStart);
if (iEnd == -1) break;
sTextHTML = sTextHTML.substring(0, iStart) + sTextHTML.substring(iEnd + sEndComment.length);
}
return sTextHTML;
}

Had a similar issue with line-breaks being counted as characters and I had to remove them.
$(document).ready(function(){
$(".section-overview textarea").bind({
paste : function(){
setTimeout(function(){
//textarea
var text = $(".section-overview textarea").val();
// look for any "\n" occurences and replace them
var newString = text.replace(/\n/g, '');
// print new string
$(".section-overview textarea").val(newString);
},100);
}
});
});

Could you paste to a hidden textarea, copy from same textarea, and paste to your target?

Hate to say it, but I eventually gave up making TinyMCE handle Word crap the way I want. Now I just have an email sent to me every time a user's input contains certain HTML (look for <span lang="en-US"> for example) and I correct it manually.