JavaScript: Get the data type
JavaScript Function: Exercise-9 with Solution
Write a JavaScript function that accepts an argument and returns the type.
Note : There are six possible values that typeof returns: object, boolean, function, number, string, and undefined.
Sample Solution: -
HTML Code:
<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8 />
<title>Detect JavaScript Data Types</title>
</head>
<body>
</body>
</html>
JavaScript Code:
function detect_data_type(value)
{
var dtypes = [Function, RegExp, Number, String, Boolean, Object], x, len;
if (typeof value === "object" || typeof value === "function")
{
for (x = 0, len = dtypes.length; x < len; x++)
{
if (value instanceof dtypes[x])
{
return dtypes[x];
}
}
}
return typeof value;
}
console.log(detect_data_type(12));
console.log(detect_data_type('w3resource'));
console.log(detect_data_type(false));
Sample Output:
number string boolean
Flowchart:

Live Demo:
See the Pen JavaScript -Check a number is prime or not-function-ex- 8 by w3resource (@w3resource) on CodePen.
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