javascript nan

1if (isNaN(number)) {
2      number = 0;
3}

1let value = 0 / 0; // undefined
2if (isNaN(value)) value = 0;

1// NaN:  Not a Number in javascript
2console.log(parseInt('1.23'));				// 1.23
3console.log(parseInt('something'));			// NaN

1NaN = Not a number.

1let b=1
2let n=readline()
3if(isNaN(b)){
4  console.log("You typed 0!")
5}else{
6  console.log("You did not type 0!")
7}

1var val = Number.NaN;