Build a Palindrome Checker - Build a Palindrome Checker

JavaScript
1

Tell us what’s happening:

I am getting a uncaught TypeError: Faled to construct ‘URL’: Invalid URL when I click on my button or in the text box, but from my understanding this error is when you’re calling a URL which I am not doing. Since this happens from just clicking on my project to test I can’t test much further.

Your code so far

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

<head>
    <meta charset="utf-8">
    <title>Palindrome Checker</title>
    <link href="styles.css" rel="stylesheet" />
</head>

<body>
  <h1>SHOULDN'T THE WORD FOR PALINDROME BE A PALINDROME?</h1>
  <div class="container">  
   <h2>Enter in text to check for a palindrome</h2>
   <a class="input-btn">
    <input type="text" id="text-input"></input>
    <button id="check-btn">CHECK IT!</button>
   </a> 
    <span id="result"></span>
  </div>
  <div class="deffinition">
    <p>&#128161 A <a style="font-style:italic"> palindrome</a> is a word or phrase that can be read the same way forwards and backwards, ignoring punctuation,case, and spacing.</p>
   </div>  
  <script src="script.js"></script>
</body>

</html>

/* file: styles.css */
body {
  background-color: #030353;
  width: 100%;
  height: 100%;
}

h1 {
  color: white;
  text-align: center;
  width: 600px;
}

.container {
  background-color: white;
  width: 300px;
  height: 150px;
  display: block;
  margin: auto;
  border: solid, black 3px;
  border-radius: 5px;
}

h2 {
  color: #030353;
  text-align: center;
  font-size: 1.25em;
  margin: 7px
}

.input-btn {
  display: flex;
  padding-left: 10px;
  margin-top: 10px;
}

.text-input {
  border: solid, black, 2px;
}

button {
  background: orange;
  color: #030353;
  font-weight: bold;
  border-radius: 5px;
  margin-left: 15px
}

.deffinition {
  width: 300px;
  background: green;
  border-radius: 5px;
  display: block;
  margin: auto;
}

p {
  color: yellow;
  font-weight: bold;
  text-align: center;
  font-size: 1.25em;
}

/* file: script.js */
const checkBtn = document.getElementById("check-btn");
const textInput = document.getElementById("text-input");
const result = document.getElementById("result");

function palindrome(string) {
  const cleanInput = string.replace(/[^a-zA-Z0-9]/g, "").toLowerCase();
  const reverse = string.split("").reverse().join("");  
  const cleanReverse = reverse.replace(/[^a-zA-Z0-9]/g, "").toLowerCase();
  return cleanReverse === cleanInput
};

checkBtn.addEventListener("click", () => {
  const input = textInput.value;
  if (input === "") {
    return result.innertext = `Please input a value`;
  };
  if (palindrome(input) === true) {
    return result.innertext = `${input} is a palindrome`
  } else {
    return result.innertext = `${input} is not a palindrome`
  };
});

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36

Challenge Information:

Build a Palindrome Checker - Build a Palindrome Checker

2

Your HTML has issues. Use an HTML Validator to check for errors. Just click the “Validate by Direct Input” tab and paste your code into the text area. Then check/fix your errors until there are no more errors.

4

hi @oxymis

It is great that you solved the challenge, but instead of posting your full working solution, it is best to stay focused on answering the original poster’s question(s) and help guide them with hints and suggestions to solve their own issues with the challenge. How to Help Someone with Their Code Using the Socratic Method

We are trying to cut back on the number of spoiler solutions found on the forum and instead focus on helping other campers with their questions and definitely not posting full working solutions.