Question

How to check if value is NaN in TypeScript

Answer 1

console.log(isNaN('typescript'));
console.log(isNaN(undefined));
console.log(isNaN('NaN'));
console.log(isNaN(NaN)); 
console.log(isNaN(18 / 0));
console.log(isNaN(23452));  
   
   
   
   
/*
run:
   
true
true
true
true
false
false
   
*/

 

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