Help me in solving LPJSPR157 problem

help
,
1

My issue

hello
please help me debug my code

My code

const n = parseInt(input);

// Function to check if a number is prime
 function isPrime(x) {
 // Implement your code here
 var flag=0;
    for(let j=2;j<x;j++){
        
        if((x%j)==0){
            var flag=1;
            break;
        }
    
    }if(flag==0){
        return x;
    }
 
}

// Function to print prime numbers between l and r (inclusive)
 function printPrimes(l, r) {
   // Implement your code here
  
   var result="";
   for(let i=l;i<=r;i++){
       
       
       
       var result=result+" "+isPrime(i)+" ";
       
       
       
       
       
   }console.log(result);
   
   
}

printPrimes(n, 5 * n);

Problem Link: All Primes in Range Practice Problem in JavaScript