JavaScript: Check whether a given value is US zip code or not
JavaScript validation with regular expression: Exercise-12 with Solution
Write a JavaScript function to check whether a given value is a US zip code or not.
Sample Solution:-
HTML Code:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>JavaScript function to check whether a given value is US zip code or not</title>
</head>
<body>
</body>
</html>
JavaScript Code:
function is_usZipCode(str)
{
regexp = /^[0-9]{5}(?:-[0-9]{4})?$/;
if (regexp.test(str))
{
return true;
}
else
{
return false;
}
}
console.log(is_usZipCode("03201-2150"));
console.log(is_usZipCode("7892"));
Sample Output:
true false
Flowchart:

Live Demo:
See the Pen javascript-regexp-exercise-12 by w3resource (@w3resource) on CodePen.
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Next: Write a JavaScript function to check whether a given value is UK Post Code or not.
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