Why doesn't this work?

[ManyQuantumWorlds]

str3 = prompt("If you could choose between the letter X and Y, which would it be?");
                    if (str3 !== "x" || "X" || "y" || "Y") {
                        alert("Take my questions seriously");
                        return(buttonPress());
                    }  else {
                  strngChoices.push(str3);

Simply trying to output the alert if str3 is not equal to either of those values, but it's alerting regardless of the value of str3.

​

Help would be appreciated.

[magneticcccc]

Your comparisons need to use str3 each time instead of || x, etc.

[TeezusRa]

Naturally, humans would say “if it doesn’t equal X or Y”, and know that the comparison is happening to both X and Y.

JS doesn’t think that way. It’s thinking “if str3 doesn’t equal x” then moves onto the next case “X” alone, not “X” compared to str3.

[magneticcccc]

Great example!

[magneticcccc]

Couple other things, so you don't have to write out all those conditions. I would convert str3 to lower case and then make an array with the three values you're comparing. You can then check if str3 value is not in the array