I need to set i depending on a condition:

let i = null
nightmode === true ? i = 1 : i = 0

Is it possible to declare i within the ternary expression, or does it have to be in outside of it (to handle scoping)?

I need to set i depending on a condition:

let i = null
nightmode === true ? i = 1 : i = 0

Is it possible to declare i within the ternary expression, or does it have to be in outside of it (to handle scoping)?

• javascript
• scope
• ternary-operator
• variable-declaration

• 2 Your ternary is using a side effect instead of how it was designed to be used. let i = nightmode === true ? 1 : 0 – mplungjan Commented Dec 16, 2018 at 14:59

2 Answers 2

You could use the ternary directly as assignment for the value.

let i = nightmode === true ? 1 : 0;

I think your variable i needs to be outside of it, although it is possible to set i in the following manner:

let nightmode = true;
let i = (nightmode === true) ? 1 : 0
console.log(i);