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isNan

Pha Kyu answered on February 26, 2021 Popularity 9/10 Helpfulness 2/10

answer isNan

related isNaN

isNan

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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)); // true

Popularity 9/10 Helpfulness 2/10 Language javascript

Source: 127.0.0.1

Tags: isnan javascript

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Contributed on Jun 04 2021

Pha Kyu

0 Answers Avg Quality 2/10

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isNaN

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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: 3140

Popularity 9/10 Helpfulness 4/10 Language whatever

Source: developer.mozilla.org

Tags: isnan isna

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Contributed on Feb 26 2021

Holy

0 Answers Avg Quality 2/10

isNaN

Comment

isNaN("Hello")  // Returns true
isNaN(345)   // Returns false
isNaN('1')  // Returns false, since '1' is converted to Number type which results in 0 ( a number) 
isNaN(true) // Returns false, since true converted to Number type results in 1 ( a number)
isNaN(false) // Returns false
isNaN(undefined) // Returns true

Popularity 7/10 Helpfulness 3/10 Language javascript

Source: www.interviewbit.com

Tags: isnan javascript ja

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Contributed on May 09 2022

Red Team

0 Answers Avg Quality 2/10

isNan

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