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JavaScript Regular Expressions in JavaScript Validating a Form Form Validation

Posted by Sai Hotung
Sai Hotung
1,639 Points

Missing something, it won't accept my answer

// Type inside this function function isValidHex(text) { const hexRegEx = /^#[a-f0-9]{6}$/i; return text.test(hexRegEx); }

const hex = document.getElementById("hex"); const body = document.getElementsByTagName("body")[0];

hex.addEventListener("input", e => { const text = e.target.value; const valid = isValidHex(text); if (valid) { body.style.backgroundColor = "rgb(176, 208, 168)"; } else { body.style.backgroundColor = "rgb(189, 86, 86)"; } });

app.js 
// Type inside this function
function isValidHex(text) {
     const hexRegEx = /^#[a-f0-9]{6}$/i;
  return text.test(hexRegEx);
}

const hex = document.getElementById("hex");
const body = document.getElementsByTagName("body")[0];

hex.addEventListener("input", e => {
  const text = e.target.value;
  const valid = isValidHex(text);
  if (valid) {
    body.style.backgroundColor = "rgb(176, 208, 168)";
  } else {
    body.style.backgroundColor = "rgb(189, 86, 86)";
  }
});
index.html 
<!DOCTYPE html>
<html>

<head>
    <title>DOM Manipulation</title>
</head>
<link rel="stylesheet" href="style.css" />

<body>
    <div id="content">
        <p>Enter a valid hex value below to make the screen turn green.</p>
        <input type="text" id="hex">
    </div>
    <script src="app.js"></script>
</body>

</html>

1 Answer

Bramyn Payne
Bramyn Payne
19,589 Points
Bramyn Payne
Bramyn Payne
19,589 Points

Hello Sai,

I think that you're mixing up hexRegEx and text You should call .test() on the regular expression variable and pass in text

Hope that helps.