Question

How to get the first digit after the decimal point of a float number in JavaScript

Answer 1

const f = 231.687612;
   
const s = f.toString();
 
const pos = s.indexOf('.');
   
console.log(s[pos + 1]); 
       
 
 
    
/*
run:
     
"6"
        
*/

 

70+ SQL courses for beginners and professionals

Answer 2

const f = 231.687612;
   
console.log(f.toString().split('.')[1][0]); 
       
 
 
    
/*
run:
     
"6"
        
*/

 

70+ SQL courses for beginners and professionals

Answer 3

const f = 231.687612;
   
console.log((Math.floor(Math.abs(f) * 10)) % 10); 
       
 
 
    
/*
run:
     
6
        
*/

 

70+ SQL courses for beginners and professionals