Why does the if else if else not work

Question

I tried to "if" multiple things ( if a = 1 or 2, do something) i tried this code
var input=prompt("");
if (input === "hi", "bye"){
console.log("1");
}
else if (input === "yo", "hey"){
console.log("10");
}
else {
console.log("0");
}
note: i already tried if (input = / == / ===)
for the more visual thinkers and to test your solution:
https://code.sololearn.com/WZ6kZfN2UqHH/?ref=app

Answer 1

To avoid long if statements and keep them clear you can store your values in array and check if the value exists there.

var array = ["hi", "bye"];
var array2 = ["ey", "yo"];

var input = prompt("enter a word");
if(array.indexOf(input) > -1) {
console.log("1");
} else if(array2.indexOf(input) > -1) {
console.log("10");
}

Answer 2

There were a couple of mistakes, basically on the if statement. When you must test a value of a variable the right syntax is ==.
Plus, if you got to test if if a variable is this OR that value the correct syntax for the OR test is ||.

Here’s the correct code:

function func(){
var input = prompt("enter a word");
if (input == "hi" || input == "bye"){
console.log("1");
}
else if (input == "ey" || input == "yo"){
console.log("10");
}
else if (input == "bonjour" || input == "hoi"){
console.log("11");
}
else {
console.log("0");
}
}

Answer 3

1. I am testing a string
2. Is there really no shorter way, because I have to test for about 16 numbers and give the same output, so do I have to write " input === "string" ||" 16 times in one if statement?

Answer 4

I’ve tested my code and works fine, in 20 years of development I’ve never ever used a sigle time the === test :)

It really depends, maybe it’s the case to use the “switch” statement.. (and remember the “break;” at the end on any single case!)

Answer 5

Thanks all for the answers, but I marked the shortest answer as the best, but all of you, thanks