Question

How to replace one specific digit in a number with other specific digit in JavaScript

Answer 1

function replace_digit_in_number(number, d1, d2) { 
    var result = 0, multiply = 1; 
    
    while (number != 0) { 
        var reminder = number % 10; 
         
        if (reminder == d1)  
            result += d2 * multiply;  
        else
            result += reminder * multiply;          
  
        multiply *= 10; 
        number = Math.trunc(number / 10); 
    } 
    return result; 
} 
    
var number = 18803808; 
        
document.write(replace_digit_in_number(number, 8, 7));


/*
run:

17703707 

*/

 

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