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New line character not being printed when setting innerHTML

I have a django template in which my javascript function has the following lines,
resDiv = document.getElementById("res");
console.log(result.des);
resDiv.innerHTML+=('<h3 style="padding-bottom:50px;"><strong>Desciption: </strong><br><br><i style="color:#0B45A4;">'+result.des+'</i></h3>');
When console.log is executed, it is printed along with new lines in result.des.
But when I concatenate it and try try to fill the innerHTML of resDiv the new lines are not being printed.
All new lines are removed and is filled.
How can I make sure that the new lines are printed in resDiv?

Try something like this, and be sure that resDiv is your real target
resDiv.innerHTML = resDiv.innerHTML.concat('<h3 style="padding-bottom:50px;"><strong>Desciption: </strong><br><br><i style="color:#0B45A4;">'+result.des+'</i></h3>');

from your question it is not totally clear, what you mean, but I guess that you just need to replace the newlines in result.des (e.g. \n, \r) with html newlines <br>

When you concatenate your result.des, make sure you put <br> tag between lines.
https://www.w3schools.com/tags/tag_br.asp
If result.des is a javascript array, you can do result.des.join('<br>');

Converting Markdown/ASCI (Multiline) To HTML (nodejs)

I currently have this in my editor..
* Line one
* Line two
some more info
Which sits in the database like this
* Line one\r\n* Line two\r\nsome more info
I am using Markdown package to turn the markdown to HTML to display on my site, this works fine.
However it is ignoring the line breaks, thus giving me this output...
<ul><li>Line one</li><li>Line two\r\nsome more info</li></ul>
When the output I want is...
<ul><li>Line one</li><li>Line two</li></ul>some more info
I guess i need to make a 'multiline string' from my single line before i run it through the markdown?
Any thoughts on the best approach?
Currently using this code
var markdown = require( "markdown" ).markdown;
var unMarkdownDescriptions = function(description){
//Check if currently contains HTML.
if(typeof description !== "undefined"){
if(description.indexOf("<") !=-1){
return description;
}else{
return html_content = markdown.toHTML(description);
}
}else{
return '';
}
}
Current code check if already stored as HTML in DB and ignores them (we are migrated from HTML to MD, the HTML generated on the ERP is dodgy at the best of times!)

However it is ignoring the line breaks
That's how it should behave, according to the Markdown spec:
A paragraph is simply one or more consecutive lines of text, separated by one or more blank lines. (A blank line is any line that looks like a blank line — a line containing nothing but spaces or tabs is considered blank.) Normal paragraphs should not be indented with spaces or tabs.
The implication of the "one or more consecutive lines of text" rule is that Markdown supports "hard-wrapped" text paragraphs. This differs significantly from most other text-to-HTML formatters (including Movable Type’s “Convert Line Breaks” option) which translate every line break character in a paragraph into a <br /> tag.
To get the output you want, simply include a blank line after your list:
* Line one
* Line two
some more info

read/write csv file using javascript in .htm

Intro:
I'm trying to make a html application (.htm) to make some business calculations. The issue that comes is that I need to keep records of everything.
First I found some visual basic scripts to read/write .mdb files, but that was too complicated for me since I have never worked with vbs.
So, I decided to use javascript to read/write .csv file
This is the function I found for reading:
function displayClassList() {
var path="log.csv"
var fso = new ActiveXObject('Scripting.FileSystemObject'),
iStream=fso.OpenTextFile(path, 1, false);
document.getElementById("searchResults").innerHTML="";
while(!iStream.AtEndOfStream) {
var line=iStream.ReadLine();
document.getElementById("searchResults").innerHTML += line + "<br/>";
}
iStream.Close();
}
It works good.
The problem I have is when it comes to writing. I can not append text to a new line in the document. This is the script I got:
var fso = new ActiveXObject("Scripting.FileSystemObject");
var s = fso.CreateTextFile("./ClassList.csv", true);
s.WriteLine("helloworld");
s.Close();
}
The problem with this script is that it replaces all the existing text with "helloworld". What I want is to write "helloworld" in new line. Any solution for that?
Also, is there any way to edit a specific line, like replacing all text in line x?
Here are the scripts for download so that you can test them : http://ge.tt/7u5bDAV2/v/0

If you want to append to the file without overwriting the existing contents, you can use the OpenTextFile method - note that the CreateTextFile method you're using truncates the existing contents.
var fso = new ActiveXObject("Scripting.FileSystemObject");
var s = fso.OpenTextFile("./ClassList.csv", 8);
s.WriteLine("helloworld");
s.Close();
There is no easy way of modifying one line of a text file, unless the modifications you're making leave the line the same length, since otherwise if your changes are shorter you will leave part of the old line unchanged, while if your changes are longer you would overwrite the next line.
More importantly, the FileSystemObject does not support seeking, which you would need in order to jump to a specific line.
If you want to modify one line of the file, your best bet is to:
Open the existing file for reading, and also create a new file for writing
Read the existing file line by line, writing the content you want to keep to the new file
Write your modified line(s) to the new file where needed
Close both files, and rename the new file to replace the old one
Having said that, maybe it would be easier for you if your data file was an HTML or XML document rather than a CSV, since you could then use DOM manipulation functions to read and write it.

Generally you use "\n" in your string to create new lines. It represents the newline character in a JS string.
Here's how "lines" work in text files. It's just a long sequence of characters, and one of the possible characters is the newline character. Whatever program renders the file when you view it just knows to show text after a newline character below any text that was before it. You could split the string you read by the newline character and get an Array representing each line and work with it that way. Then to write you'd join that Array by the newline character and write the resulting string.
Note that some programs require "\r\n" to represent a proper newline and won't render new lines for just a "\n"...so try "\r\n" as the newline if you're having trouble getting newlines to work for the program you use to view the text files.
EDIT: Since you don't seem to believe me I'll just prove it to you with code. I did it with an .hta file, but the concept is the same.
Made a text file "myText.txt" and an .hta file with the code in it. The text file held the contents:
This is line 1
Line 2
the third line
line 4 and stuff
fifth line
Then in my code I made these two functions for easily reading and writing:
function getFile(fname)
{
var opener = new ActiveXObject("Scripting.FileSystemObject");
var pointer = opener.OpenTextFile(fname, 1, true);
var cont = pointer.ReadAll();
pointer.Close();
return cont;
}
function setFile(fname, content)
{
var opener = new ActiveXObject("Scripting.FileSystemObject");
var pointer = opener.OpenTextFile(fname, 2, true);
pointer.WriteLine(content);
pointer.Close();
}
For the programs I was using it uses "\r\n" for the newline. So that's what the example will use. I simply utilize splitting and joining on the string of content to edit whatever line of it I choose:
var content = getFile('myFile.txt'); // read it
var lineArr = content.split('\r\n'); // now we have an array of the file's lines
lineArr[2] = 'NEW LINE CONTENT!'; // editing third line (indexed from 0)
var newContent = lineArr.join('\r\n'); // make it text again with newlines
setFile("myFile.txt", newContent); // write it
Now the text file looks like this:
This is line 1
Line 2
NEW LINE CONTENT!
line 4 and stuff
fifth line
Bam. Editing individual lines in a text format file by understanding how newlines work in text.

Adding a line in javascript code

function calcPrimesLoop() {
var primes = document.getElementById('primes');
primes.appendChild(document.createTextNode(" , /n , "+this.prime.nextPrime()));
calcPrimesDelay = setTimeout('calcPrimesLoop()', this.delay);
}
Okay so this is my code I am displaying an array of prime numbers. The issue is that I want each prime number to be on a seperate line but I am unable to do this. I have tried /n and but they have not worked. It is being displayed in a textarea in html. Thank you

You could append a br element:
primes.appendChild(document.createElement('br'));
...although usually the way you'd want to do this would be to put the primes in some kind of element container that you could style appropriately with CSS. A series of divs would automatically stack vertically:
var div = document.createElement('div');
div.appendChild(document.createTextNode(/*...your prime...*/));
primes.appendChild(div);
Two side notes on this line:
calcPrimesDelay = setTimeout('calcPrimesLoop()', this.delay);
First, it's almost always best to use function references, not strings, with setTimeout. So:
calcPrimesDelay = setTimeout(calcPrimesLoop, this.delay);
Second, unless you're declaring calcPrimesDelay somewhere you haven't shown, you're falling prey to The Horror of Implicit Globals.

You should use a backslash instead of a forward slash (\n)
EDIT: The below only applies to "normal" elements. For a textarea, you should be doing primes.value += " , \n , "+this.prime.nextPrime();
Additionally, newlines are collapsed in HTML (if you write text on multiple lines in your source code, it comes out on one line) but you can "fix" this using simple CSS:
primes.style.whiteSpace = "pre-wrap";
Spread the word about white-space! People need to stop using <br /> tags just to get a newline!

Javascript: Insert text at specified line

I am kind of new to javascript, but I was looking to see if it was possible to add a line of text to a file at a specified position? i.e. every file needs to have the same text inserted at line no. 3
Someone suggested "split by line feed, add data, then rejoin", but i have no clue how to do that. Just looking for somewhere to get started or pointed in the right diretion.

Split by line feed:
data = data.split(/\r?\n/);
Add data:
data = data.splice(2, 0, new_data);
Rejoin:
data = data.join("\r\n");