JavaScript: Check whether a given value represents a domain or not
JavaScript validation with regular expression: Exercise-18 with Solution
Write a JavaScript function to check whether a given value represents a domain.
Sample Solution:-
HTML Code:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Write a JavaScript function to check whether a given value represents a domain or not</title>
</head>
<body>
</body>
</html>
JavaScript Code:
function is_domain(str)
{
regexp = /^[a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,6}$/i;
if (regexp.test(str))
{
return true;
}
else
{
return false;
}
}
console.log(is_domain('www.example.com'));
console.log(is_domain('www.npm.co.uk'));
console.log(is_domain('http://www.example.com'));
console.log(is_domain('https://www.example.com'));
console.log(is_domain('www.example.com'));
Sample Output:
true true false false true
Flowchart:

Live Demo:
See the Pen javascript-regexp-exercise-18 by w3resource (@w3resource) on CodePen.
Improve this sample solution and post your code through Disqus
Previous: Write a JavaScript function to check whether a given value is hexcolor value or not.
Next: Write a JavaScript function to check whether a given value is html or not.
What is the difficulty level of this exercise?
Test your Programming skills with w3resource's quiz.
- Weekly Trends
- Python Interview Questions and Answers: Comprehensive Guide
- Scala Exercises, Practice, Solution
- Kotlin Exercises practice with solution
- MongoDB Exercises, Practice, Solution
- SQL Exercises, Practice, Solution - JOINS
- Java Basic Programming Exercises
- SQL Subqueries
- Adventureworks Database Exercises
- C# Sharp Basic Exercises
- SQL COUNT() with distinct
- JavaScript String Exercises
- JavaScript HTML Form Validation
- Java Collection Exercises
- SQL COUNT() function
- SQL Inner Join