Checks if a value is a valid number (not NaN).
The value to check.
True if the value is a number and not NaN.
isNumber(42); // trueisNumber(NaN); // falseisNumber("123"); // false Copy
isNumber(42); // trueisNumber(NaN); // falseisNumber("123"); // false
Checks if a value is a valid number (not NaN).