Sometimes, we want to shorten conditional statements with JavaScript.

In this article, we’ll look at how to shorten conditional statements with JavaScript.

How to shorten conditional statements with JavaScript?

To shorten conditional statements with JavaScript, we can use the array includes method.

For instance, instead of writing

if (test.type == 1 || test.type == 2 || test.type == 3 || test.type == 4) {
  // do something.
}

We can shorten that to

if ([1, 2, 3, 4].includes(test.type)) {
  // do something
}

We check if at least one of 1, 2, 3, and 4 are set as the value of test.type with

test.type == 1 || test.type == 2 || test.type == 3 || test.type == 4

or

[1, 2, 3, 4].includes(test.type)