python test is nan
math.isnan(n)python test is nan
math.isnan(n)check if something is nan python
import math
print math.isnan(float('NaN'))OutputTrue
print math.isnan(1.0)OutputFalseisNaN
function milliseconds(x) {
if (isNaN(x)) {
return 'Not a Number!';
}
return x * 1000;
}
console.log(milliseconds('100F'));
// expected output: "Not a Number!"
console.log(milliseconds('0.0314E+2'));
// expected output: 3140isNan
const fail = 10 / "zero";
console.log(fail); // NaN (Not a Number)
console.log(isNaN(fail)); // true
console.log(isNaN(10)); // false
console.log(isNaN('10')); // false
console.log(isNaN('blabla')); // true
console.log(isNaN(true)); // false
console.log(1.7976931348623157e+308 * 1000); // Infinity
console.log(1.7976931348623157e+308 * -1000); // - Infinity
console.log(10 / 0); // Infinity
console.log(isFinite(123)); // trueCopyright © 2021 Codeinu
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