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JavaScript Regular Expressions in JavaScript Validating a Form Form Validation

Posted by Cole Smith
.a{fill-rule:evenodd;}techdegree
Cole Smith
Web Development Techdegree Student 13,796 Points

Using the test() method to find valid Hexs, RegEx Code challenge 2/2

A bit confused, also tried setting a variable to house the test method in but that didn't work either, any suggestions would be greatly appreciated! thanks

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

}

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

Steven Parker
Steven Parker
229,744 Points
Steven Parker
Steven Parker
229,744 Points

This code has the function name instead of the name of the regex you just created. Also, performing the test on a line by itself doesn't capture the result. The function needs to return the result of the test:

  return hexRegEx.test(text);
Cole Smith
.a{fill-rule:evenodd;}techdegree
Cole Smith
Web Development Techdegree Student 13,796 Points

oh ok I understand now, thanks a lot for the help!