JavaScript: Validate whether a given value is RegExp or not

Last update on August 19 2022 21:51:52 (UTC/GMT +8 hours)

JavaScript validation: Exercise-8 with Solution

Write a JavaScript function to validate whether a given value is RegExp or not.

Sample Solution:-

HTML Code:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>JavaScript function to validate whether a given value RegExp or not.</title>
</head>
<body>

</body>
</html>

JavaScript Code:

function is_regexp(value)
        {
       return toString.call(value) === '[object RegExp]';
        }

console.log(is_regexp(/test/));

console.log(is_regexp('bar'));

console.log(is_regexp(72));

Sample Output:

true
false
false

Flowchart:

Live Demo:

See the Pen javascript-validation-exercise-8 by w3resource (@w3resource) on CodePen.

Improve this sample solution and post your code through Disqus

Previous: Write a JavaScript function to validate whether a given value type is pure json object or not.
Next: Write a JavaScript function to validate whether a given value type is char or not.