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isnumber javascript function Code Example
compare NaN in javascript if condititon 
// Use isNaN() 
// In javascript compare NaN direct alweys return false
let num1 = Number("Vishal");

// This code never work
if(num1 == NaN){  // Direct compare NaN alweys return false so use isNaN() function
  ....... Your Code .......
}  

// This code work
if(isNaN(num1){
  .........Your Code .......
}
Source: stackoverflow.com
isnumber javascript function 
Line 11 in the code is incorrect.
"if(isNaN(num1){"  is missing the closing parentheses.
It should be "if(isNaN(num1)){" instead.



Javascript

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Type:
 Code Example
Category:
 Coding
Sub Category:
 Code Example
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