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Start your free trialHaardik Gupta
Full Stack JavaScript Techdegree Student 5,459 Pointsjs help
In this challenge you'll write a validator for a hexadecimal string used to set a CSS color. Hexadecimal values for css colors start with a pound sign, or hash (#), then six characters that can either be a numeral or a letter between A and F, inclusive. Two examples of these strings would be #FF4569 and #578E9A.
For this step of the challenge, write a regular expression that will match any hexadecimal string and store it in a variable named hexRegEx. The regex should be case-insensitive. Assume that the string will always be 7 characters.
// Type inside this function
function isValidHex(text) {
}
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)";
}
});
<!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
Elias Starks
Full Stack JavaScript Techdegree Graduate 13,605 PointsHey should Look something like this /^#[a-fA-F0-9]{6}$/;
Zimri Leijen
11,835 PointsZimri Leijen
11,835 PointsWhat have you tried so far?
This seems to be the challenge itself, what exactly are you getting stuck on?