JavaScript: Validate whether a given value type is char or not
JavaScript validation: Exercise-9 with Solution
Write a JavaScript function to validate whether a given value type is char or not.
Sample Solution:-
HTML Code:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>JavaScript function to validate whether a given value type is char or not</title>
</head>
<body>
</body>
</html>
JavaScript Code:
function is_char(value)
{
if (Object.prototype.toString.call(value) !== '[object String]')
return false;
return value && value.length === 1;
}
console.log(is_char('f'));
console.log(is_char('*'));
Sample Output:
true true
Flowchart:

Live Demo:
See the Pen javascript-validation-exercise-9 by w3resource (@w3resource) on CodePen.
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Next: Write a JavaScript function to check whether given value types are same or not.
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