Question

How would i get a response according to a mismatch, or possibly like an Else loop but this doesn’t appear to work since i get it even if i answer the question correctly, and if maybe i could do something like and if mismatch or something. I am new to JavaScript, so i cannot solve this myself.

var PromptAnswer3 = prompt("Well, what sports do you like to play?", "");
    while (PromptAnswer3 === null | PromptAnswer3 === "") 
    {
    alert("You didn't answer");
    PromptAnswer3 = prompt("Well, what sports do you like to play?", "");
    }
if (PromptAnswer3.match(/^(tennis|bowling|baseball|soccer|basketball|football|cricket|hockey|ice|hockey|rugby|track|golf|horseracing|water polo|swimming|biking|gymnastics|cheer-leading|skiing|snowboarding|iceskating|lacrosse|surfing|archery|boxing|kayaking|diving|spelunking|fencing|karate|judo|rockclimbing|softball|volleyball|wrestling|badminton|javelin throwing|synchronized swimming|yoga|ringette)!?$/i)) 
{
alert("Haha yeah, " + PromptAnswer3 "is pretty awesome.");
}
  while (PromptAnswer3)
{
  alert("I don't think that is a sport.");
  PromptAnswer3 = prompt("Well, what sports do you like to play?", "");
}

Edit [should possibly be added as an answer]

This is what i did to make it work. It is simple and easy. I followed some of the peoples advice on the answers and put the if statement in the loop, while (PromptAnswer3), and put an else and a break in the if so that it wouldn’t loop after the first time.

else {
    var PromptAnswer3 = prompt("Well, what sports do you like to play?", "");
    while (PromptAnswer3 === null | PromptAnswer3 === "") 
    {
        alert("You didn't answer");
        PromptAnswer3 = prompt("Well, what sports do you like to play?", "");
    }
    while (PromptAnswer3)
{
if (PromptAnswer3.match(/^(tennis|bowling|baseball|soccer|basketball|football|cricket|hockey|ice|hockey|rugby|track|golf|horseracing|water polo|swimming|biking|gymnastics|cheer-leading|skiing|snowboarding|iceskating|lacrosse|surfing|archery|boxing|kayaking|diving|spelunking|fencing|karate|judo|rockclimbing|softball|volleyball|wrestling|badminton|javelin throwing|synchronized swimming|yoga|ringette)!?$/i)) 
{
    alert("Haha yeah, " + PromptAnswer3 + "is pretty awesome.");
    break;
    }
    else {
      alert("I don't think that is a sport.");
      PromptAnswer3 = prompt("Well, what sports do you like to play?", "");
    }
    }
}

Answer 1

var PromptAnswer3;
while( !(PromptAnswer3 = prompt("Well, what sports do you like to play?", ""))) {
    // your regex may no work properly
    if(!/^(rugby|track|...)$/i.test(PromptAnswer3)) {
        alert("Haha yeah, " + PromptAnswer3 + "is pretty awesome.");
    }else {
        alert("I don't think that is a sport.");
        PromptAnswer3 = null;
    }
}