JavaScript generate random number except some values

Question

I\'m generating random numbers from 1 to 20 by calling generateRandom(). How can I exclude some values, say 8 and 15?

function generateRandom(mi         


        

Answer 1

You can simply do like this

function generatedRandExclude(showed,max) {
     let randNo = -1;
     while(showed.length < max) {
        	randNo = Math.floor(Math.random() * Math.floor(max));	
         	if(!showed.includes(randNo)) {
            	showed.push(randNo);
             	break;
          }
     }
     return randNo;
}

let showed = [];
function run() {
    console.log(generatedRandExclude(showed,6));
}
run();
run();
run();
run();

generatedRandExclude generate random number excluded using array showed.