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:

Visual Presentation:

Sample Solution:

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"));

Output:

true
true
false

Flowchart:

Live Demo:

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

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