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JavaScript Exercises

JavaScript: Search a date within a string

JavaScript validation with regular expression: Exercise-4 with Solution

Write a JavaScript program to search a date within a string.

Sample string:

"Albert Einstein was born in Ulm, on 14/03/1879."

Pictorial Presentation:

JavaScript: Search a date within a string

Sample Solution:-

HTML Code:

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

</body>
</html>

JavaScript Code:

function is_dateString(str)
{
 regexp = /^(1[0-2]|0?[1-9])\/(3[01]|[12][0-9]|0?[1-9])\/(?:[0-9]{2})?[0-9]{2}$/;
  
        if (regexp.test(str))
          {
            return true;
          }
        else
          {
            return false;
          }
}

console.log(is_dateString("01/01/2015"));

console.log(is_dateString("01/22/2015"));

console.log(is_dateString("32/01/2015"));

Sample Output:

true
true
false

Flowchart:

Flowchart: JavaScript- Search a date within a string

Live Demo:

See the Pen javascript-regexp-exercise-4 by w3resource (@w3resource) on CodePen.


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