Build a RegEx Sandbox - Step 15 failing

Tell us what’s happening:

All tests pass except for test 15. The matched texts are being highlighted. I’ve added a console.log() of the html. It shows the span elements with the said attribute surrounding the matches. Any idea why this is failing?

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">
    <link rel="stylesheet" href="styles.css">
    <title>Regex Sandbox</title>

</head>

<body>
    <h1>Regex Sandbox</h1>
    <main>
        <div id="regex-container">
            <label for="pattern">Regex Pattern:
                <div id="pattern-container">/<input type="text" id="pattern" name="pattern"
                        placeholder="Enter your regex pattern">/</div>
            </label>
            <div id="flags-container">
                <p>Flags: </p>
                <label for="i">
                    <input type="checkbox" name="flags" id="i"> i
                </label>
                <label for="g">
                    <input type="checkbox" name="flags" id="g"> g
                </label>
            </div>
        </div>
        <div id="test-container">
            <p>Test String:</p>
            <div id="test-string" placeholder="Enter your test string" contenteditable="true"></div>
        </div>
        <button class="btn" id="test-btn" type="button">Test Regex</button>
        <div id="result-container">
            <h2>Result:</h2>
            <p id="result">
            </p>
        </div>

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

</html>
/* file: styles.css */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --dark-grey: #1b1b32;
    --light-grey: #f5f6f7;
    --golden-yellow: #fecc4c;
    --yellow: #ffcc4c;
    --gold: #feac32;
    --orange: #ffac33;
    --dark-orange: #f89808;
    --border: 0.2rem solid darkgrey;
    --padding: 0.3rem;
}

body {
    background-color: var(--dark-grey);
    color: var(--light-grey);
    font-size: 20px;
    font-family: "Lato", Helvetica, Arial, sans-serif;
    padding: 5px;
}

h1 {
    margin: 5rem auto 2rem;
    text-align: center;
}

p {
    padding: var(--padding);
}

#regex-container {
    max-width: 680px;
    margin: 20px auto;
    display: flex;
    justify-content: center;
    align-items: center;
    border: var(--border);
}

#regex-container>label {
    padding: var(--padding);
    flex: 1 1 auto;
}

#pattern-container {
    display: inline-block;
    color: var(--dark-grey);
    background-color: var(--light-grey);
    margin: 5px;
    border: var(--border);
}

#pattern {
    margin: 0.2rem;
    border: 0;
    font-size: 1rem;
    width: calc(100% - 1.2rem);
}

#pattern:focus {
    outline: none;
}

#flags-container {
    display: flex;
    align-items: center;
    flex: 1 1 auto;
}

#flags-container>label {
    padding: var(--padding);
    margin-right: 0.3rem;
}

#test-container {
    max-width: 680px;
    margin: 20px auto;
    display: flex;
    flex-direction: column;
    flex: 0 0 auto;
    border: var(--border);
}

#test-string {
    background-color: var(--light-grey);
    min-height: 5rem;
    color: var(--dark-grey);
    border-top: var(--border);
    font-size: 1.2rem;
}

[contenteditable=true]:empty:before {
    content: attr(placeholder);
    pointer-events: none;
    color: var(--dark-grey);
}

::placeholder {
    color: var(--dark-grey);
}


button {
    display: block;
    cursor: pointer;
    width: 8rem;
    margin: 0.2rem auto;
    color: var(--dark-grey);
    background-color: var(--gold);
    background-image: linear-gradient(var(--golden-yellow), var(--orange));
    border-color: var(--gold);
    border-width: 0.2rem;
    font-size: 1.1rem;
}

.btn:hover {
    background-image: linear-gradient(var(--yellow), var(--dark-orange));
}

#result-container {
    max-width: 680px;
    margin: 20px auto;
    display: flex;
    justify-content: center;
    align-items: center;
}

h2 {
    align-self: flex-start;
    margin: 0.4rem 0.2rem 0.2rem;
    flex: 0 1 auto;
}

#result {
    color: var(--dark-grey);
    background-color: var(--light-grey);
    font-size: 1.5rem;
    flex: 1 1 auto;
    margin: 0.2rem;
    border: var(--border);
    min-height: 3rem;
}

.highlight {
    background-color: lightgreen;
}
/* file: script.js */
const regexPattern = document.getElementById("pattern");
const stringToTest = document.getElementById("test-string");
const testButton = document.getElementById("test-btn");
const testResult = document.getElementById("result");
const caseInsensitiveFlag = document.getElementById("i");
const globalFlag = document.getElementById("g");

testButton.addEventListener("click", () => {
  
  const matches = matchRegex(regexPattern.value, stringToTest.innerText);
if (matches && matches.length) {
    const text = stringToTest.innerText;
    const regex = new RegExp(matches.join("|"), getFlags());
    stringToTest.innerHTML = text.replace(regex, match => 
      `<span class="highlight">${match}</span>`
    );
    
    testResult.innerText = matches.join(", ");
    console.log("html: "  + stringToTest.innerHTML)
    return;
  }
  
  testResult.innerText = "no match";
});
const getFlags = () => {
  let flags = "";
  if(caseInsensitiveFlag.checked) {
    flags += "i";
  }
  if (globalFlag.checked) {
    flags += "g";
  }
  return flags;
}

const matchRegex = (partialRegex, input) => {
  return input.match(new RegExp(partialRegex, getFlags()));
  
}


Your browser information:

User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/146.0.0.0 Safari/537.36

Challenge Information:

Build a RegEx Sandbox - Build a RegEx Sandbox

hello @SimonT welcome to the forum!

The Results include “sea”, but “sea” is not being highlighted.

Thanks for the hint @sampatee