JavaScript: Check whether a given value is hexadecimal value or not

JavaScript validation with regular expression: Exercise-16 with Solution

Validate Hexadecimal

Write a JavaScript function to check whether a given value is a hexadecimal value or not.

Visual Presentation:

Sample Solution:

JavaScript Code:

function is_hexadecimal(str)
{
 regexp = /^[0-9a-fA-F]+$/;
  
        if (regexp.test(str))
          {
            return true;
          }
        else
          {
            return false;
          }
}

console.log(is_hexadecimal("ffffff"));

console.log(is_hexadecimal("fz5500"));

Output:

true
false

Flowchart:

Live Demo:

See the Pen javascript-regexp-exercise-16 by w3resource (@w3resource) on CodePen.

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