Finding nearest prime to a specified number in JavaScript

We are required to write a JavaScript function that takes in a number and returns the first prime number that appears after n.

For example: If the number is 24, then the output should be 29.

Therefore, let’s write the code for this function −

Example

The code for this will be −

const num = 24; const isPrime = n => {    if (n===1){       return false;    }else if(n === 2){       return true;    }else{       for(let x = 2; x < n; x++){          if(n % x === 0){             return false;          }       }       return true;    }; }; const nearestPrime = num => {    while(!isPrime(++num)){};    return num; }; console.log(nearestPrime(24));

Output

The output in the console will be −

29