Question

How to convert a string to an integer in JavaScript

Answer 1

const s = "84723";
const n = parseInt(s, 10);
          
console.log(n);
console.log(typeof n); 

  
    
    
/*
run:
    
84723
"number"
    
*/

 

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Answer 2

console.log(parseInt('012', 10)); 
console.log(parseInt('12', 10)); 
console.log(parseInt('12.5', 10)); 
console.log(parseInt('-12', 10)); 
console.log(parseInt('javascript', 10)); 
console.log(parseInt('123javascript', 10)); 


  
  
/*
run:
  
12
12
12
-12
NaN
123
  
*/

 

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