Question

How to check if a variable is a number include value in string with JavaScript

Answer 1

function isNumeric(num) {
    return !isNaN(num); 
}

console.log(isNumeric('234')); 

console.log(isNumeric('35F')); 

console.log(isNumeric(98));

console.log(isNumeric('javascript')) 
 
 
 
  
/*
run:
        
true
false
true
false
      
*/

 

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