Optimize if condition javascript

Question

I am just a newbie in javascript, this is how i am writing if condition in a javascript,

function setAccType(accType) {
    if (accType == "PLATINUM") {
        return "Platinum Customer";
    } else if (accType == "GOLD") {
        return "Gold Customer";
    } else if (accType == "SILVER") {
        return "Silver Customer";
    }
},

Is there a better way to do it?

Answer 1

You can use an object as a map:

function setAccType(accType){
  var map = {
    PLATINUM: 'Platinum Customer',
    GOLD: 'Gold Customer',
    SILVER: 'Silver Customer'
  }

  return map[accType];
}

---

Or as @Tushar pointed out:

var accountTypeMap = {
  PLATINUM: 'Platinum Customer',
  GOLD: 'Gold Customer',
  SILVER: 'Silver Customer'
}

function setAccType(accType){  
  return accountTypeMap[accType];
}

Answer 2

var TYPES = {
  "PLATINUM":"Platinum Customer",
  "GOLD":"Gold Customer",
  "SILVER":"Silver Customer"
}

function getType(acctType){
    return TYPES[acctType];
}