Build a Markdown to HTML Converter - Build a Markdown to HTML Converter

JavaScript
1

Tell us what’s happening:

Why does the code not work in this scenario? Code failing in tests 6, 11, 16 and 46.

Your code so far

<!-- file: index.html -->
<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Markdown to HTML Converter</title>
    <link rel="stylesheet" href="styles.css">
</head>

<body>
    <h1>Markdown to HTML Converter</h1>
    <div id="container">
        <div class="container">
            <h2>Markdown Input:</h2>
            <textarea id="markdown-input" placeholder="Enter your markdown here..."></textarea>
        </div>
        <div class="container">
            <h2>Raw HTML Output:</h2>
            <div id="html-output"></div>
        </div>
        <div class="container">
            <h2>HTML Preview:</h2>
            <div id="preview"></div>
        </div>
    </div>
</body>
<script src="script.js"></script>
</html>

/* file: script.js */
let markdown = document.getElementById("markdown-input");
markdown.addEventListener("input", convertMarkdown);
let htmlOut = document.getElementById("html-output");
let preview = document.getElementById("preview");

convertMarkdown();
function convertMarkdown(){
  let regexHeader = /(\#+ )([^#]+)/gi; 
  let regexBold = /\*\*(.+)\*\*|\_\_(.+)\_\_/gi
  let regexItalics = /(?<!\*)\*(.*?)\*(?!\*)|(?<!_)_(.+)\_(?!_)/gi;
  let regexImg = /!\[(.+)\]\((.+)\)/gi;
  let regexLink = /(?<!!)\[(.+)\]\((.+)\)/gi
  let regexQuote = /> ([^>]+)/gi;
  let mkdown = markdown.value;
  let m = mkdown;

  if(mkdown[0] == ">"){
    m = mkdown.replace(regexQuote, quoteReplace);
  }
  if(mkdown[0] == "#"){
    m = mkdown.replace(regexHeader, headerReplace);
  }
  m = m.replace(regexBold, boldReplace);
  m = m.replace(regexItalics, italsReplace);
  m = m.replace(regexImg, imgReplace);
  m = m.replace(regexLink, linkReplace);
  

  htmlOut.textContent = m;
  preview.innerHTML = m;
  return m;
}

function headerReplace(match, p1 ,p2){
  if(p1) return `<h${p1.length - 1}>${p2}</h${p1.length - 1}>`; 
}

function boldReplace(match, p1, p2){
  if(p1) return `<strong>${p1}</strong>`;
  return `<strong>${p2}</strong>`;
}

function italsReplace(match, p1, p2){
  if(p1) return `<em>${p1}</em>`;
  return `<em>${p2}</em>`;
}

function imgReplace(match, p1, p2){
  return `<img alt="${p1}" src="${p2}">`;
}

function linkReplace(match, p1, p2){
  return `<a href="${p2}">${p1}</a>`;
}

function quoteReplace(match, p1){
  return `<blockquote>${p1}</blockquote>`;
}

/* file: styles.css */
* {
     box-sizing: border-box;
}
 body {
     font-family: Arial, sans-serif;
     padding: 20px;
}
 #markdown-input {
     width: 100%;
     height: 100px;
}
 #html-output, #preview {
     height: 100px;
     display: inline-block;
     width: 100%;
     border: 1px solid #ccc;
     padding: 10px;
     margin: auto;
     white-space: pre-wrap;
     background-color: #f9f9f9;
}
 @media (min-width: 600px) {
     #markdown-input, #html-output, #preview {
         height: 200px;
         margin: 0;
    }
     #container {
         display: flex;
         justify-content: space-evenly;
         gap: 10px;
    }
}

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36 Edg/133.0.0.0

Challenge Information:

Build a Markdown to HTML Converter - Build a Markdown to HTML Converter

2

Please talk about what debugging you’ve tried and how you got stuck figuring out what is wrong with your code

3

I tried running the example tests and they seem to work fine, I assume its not working because of the if statements I use to prevent matches in cases there is text before bolds and headers, but don’t know what is wrong about them, it does work in my test. Am I suposed to use regex to do those checks instead of using if statements? I tried doing that but cound’nt figure it out without inpacting the code functionality.

4

Sorry, aparently I missinterpreted what was asked, I thought the bolds and headers needed to match multiple times in the same line, not in new lines, will keep trying, my bad.