Writing the "otherwise" part

01 / 04

You want to do something in the other case too

With only an if you can say what happens when a condition holds. A pass gets announced, but nothing at all comes out for a fail.

else is where you write "otherwise, do this".

02 / 04

Straight after the closing brace of the if you write else, and open another pair of braces.

Inside goes what to do when the condition did not hold.

const score = 45;if (score >= 60) {  console.log("pass");} else {  console.log("fail");}

Result

fail

03 / 04

if and else never both run, and never both get skipped. One of them always runs.

So you can stop worrying about the case where nothing gets shown.

const rain = 70;if (rain >= 50) {  console.log("take an umbrella");} else {  console.log("no umbrella needed");}console.log("set off");

Result

take an umbrella
set off

04 / 04

You put no brackets after else. Its job is to take on everything left over when the if condition failed.

That beats writing a second if with the condition turned round: it is shorter and there is less to misread. Time to write some.

const stock = 0;if (stock > 0) {  console.log("in stock");} else {  console.log("sold out");}

Result

sold out