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

JavaScript
1

Tell us what’s happening:

A lot of tests are failing, but the preview and raw html output seems to be correct.
Any ideas about what is going wrong ?

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>
    <script src="./script.js"></script>
</body>

</html>

/* file: script.js */
const markdownInput = document.querySelector("#markdown-input");
const htmlOutput = document.querySelector("#html-output");
const preview = document.querySelector("#preview");

const convertMarkdown = (markdownText) => {
  const h1 = /^#{1}\s+(.*)$/gim;
  const h2 = /^#{2}\s+(.*)$/gim;
  const h3 = /^#{3}\s+(.*)$/gim;
  const h4 = /^#{4}\s+(.*)$/gim;
  const h5 = /^#{5}\s+(.*)$/gim;
  const h6 = /^#{6}\s+(.*)$/gim;
  const bold = /(\*\*|__)(.*?)\1/g;
  const italic = /(?<!\*)\*([^*\n]+)\*(?!\*)/g;
  const link = /\[([^\]]+)\]\(([^)]+)\)/gim;
  const quote = /^(>\s?.+(?:\n>\s?.+)*)/gm;

  let html = markdownText.replace(h6, `<h6>$1</h6>`);
  html = html.replace(h5, `<h5>$1</h5>`);
  html = html.replace(h4, `<h4>$1</h4>`);
  html = html.replace(h3, `<h3>$1</h3>`);
  html = html.replace(h2, `<h2>$1</h2>`);
  html = html.replace(h1, `<h1>$1</h1>`);

  html = html.replace(bold, `<strong>$2</strong>`);
  html = html.replace(italic, `<em>$1</em>`);

  html = html.replace(link, `<a href="$2">$1</a>`);

  html = html.replace(quote, `<blockquote>$1</blockquote>`);

  html = html
    .split(/\n{2,}/)
    .map((block) => {
      if (/^\s*<\/?(h\d|blockquote)/.test(block)) {
        return block;
      }
      return `<p>${block.trim()}</p>`;
    })
    .join("");

  return html.trim().replaceAll(/\n/g, "");
};
markdownInput.addEventListener("input", () => {
  const markDownToConvert = markdownInput.value;
  const converted = convertMarkdown(markDownToConvert);
  preview.innerHTML = converted;
  htmlOutput.innerText = converted;
  console.log(converted);
});


/* 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 (X11; Linux x86_64; rv:148.0) Gecko/20100101 Firefox/148.0

Challenge Information:

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

2

It looks that some specification of convertMarkdown function might not follow what’s expected. If you take a look at the browser’s console (not console visible on page), during running tests, there’s many errors like this:

TypeError: Cannot read properties of undefined (reading ‘replace’)

What suggests that when tests run, the object for which replace method is called is undefined.

1 Like
3

maybe read again user story 1

1 Like