问使用索引值返回第二个数组中的值，使用Javascript

EN

var arrayStars = ["Polaris", "Aldebaran", "Deneb", "Vega", "Altair", "Dubhe", "Regulus"];
var arrayConstellations = ["Ursa Minor", "Taurus", "Cygnus", "Lyra", "Aquila", "Ursa Minor", "Leo"];

function starSearch(param) {
var matchingConstellation = arrayConstellations[arrayStars.indexOf("param")];
return matchingConstellation;
  }

var userInput = prompt("Enter a star name");
starSearch(userInput);

var matchingConstellation = arrayConstellations[arrayStars.indexOf("Vega")];