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JavaScript Regular Expressions in JavaScript Validating a Form Form Validation

Posted by Joseph Chauvin
.a{fill-rule:evenodd;}techdegree
Joseph Chauvin
Full Stack JavaScript Techdegree Student 12,029 Points

I don't see how the regular expression "/#[a-fA-F0-9]{6}/" is good for matching hexidecimal values in this challenge.

It works in the Regex Tester but not in the challenge

app.js 
// Type inside this function
function isValidHex(text) {
  const hexRegEx = /#[a-fA-F0-9]{6}/;
}

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>
Tommy Gebru
Tommy Gebru
30,164 Points
Tommy Gebru
Tommy Gebru
30,164 Points

Have you tried using one of the regex flags? (for example g or i)

Joseph Chauvin
.a{fill-rule:evenodd;}techdegree
Joseph Chauvin
Full Stack JavaScript Techdegree Student 12,029 Points

Yeah it doesn't work :/ @Tommy Gebru

3 Answers

Tommy Gebru
Tommy Gebru
30,164 Points
Tommy Gebru
Tommy Gebru
30,164 Points

Ah ok so they want you to use the capture keys so the solution should look like this /^#[a-f0-9]{6}$/i

and return it as well

  const hexRegEx = /^#[a-f0-9]{6}$/i;
return hexRegEx;
Joseph Chauvin
.a{fill-rule:evenodd;}techdegree
Joseph Chauvin
Full Stack JavaScript Techdegree Student 12,029 Points

Thank you so much

Joseph Chauvin
.a{fill-rule:evenodd;}techdegree
Joseph Chauvin
Full Stack JavaScript Techdegree Student 12,029 Points

Yes I tried it

Tommy Gebru
Tommy Gebru
30,164 Points
Tommy Gebru
Tommy Gebru
30,164 Points

Ok keep in mind that hex values only take in letters a-f not a-z

Joseph Chauvin
.a{fill-rule:evenodd;}techdegree
Joseph Chauvin
Full Stack JavaScript Techdegree Student 12,029 Points

It does say a-f