Three Way Compare Variables and Strings

So I want to compare two JavaScript variables and see if they match and are equal to a specified string. One variable is based off of user input, the other is from a database. Here is an example of what I was hoping could work...

var userInput = "Simple";
var databaseData = "Simple";
if (userInput == databaseData == "Simple") ...


and what I know works.

if (userInput == "Simple" && databaseData == "Simple") ...


So the first example doesn't seem to work, even with 3 equal signs instead of 2. Is what I was hoping to work possible in some other way (the purpose is simplicity and compactness) or is what I know works the best way to do it?

userInput == databaseData

true

a == b == c

userInput == databaseData == "Simple"

userInput == true

false

1 Answer
1

This function returns true if all its arguments are strictly equal:

function allEqual(...args) el === arr[i-1]);



Whether or not it makes sense to use it on three values, like this...

if (allEqual(userInput, databaseData, 'Simple')) ...


... is up to you.

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