Javascript one line If, only state true

Question

In default 'if' one line statement are two block, for true, and false:

variable ? true block : false block;

How declare 'if' with one block?

I expect something like this:

variable ? true block;

i think you want this http://stackoverflow.com/questions/8860654/javascript-single-line-if-statement-best-syntax-this-alternative — Perminder Singh, Sep 14 '16 at 10:47
Lol it was literally the first result that came on Google. Did you even try to find an answer? — luissimo, Sep 14 '16 at 10:48

taguenizy · Answer 1 · 2016-09-14T10:58:59.997

8

if(variable) block;

With the conditional operator you need the false bit also.

edited Sep 14 '16 at 10:58

answered Sep 14 '16 at 10:46

taguenizy

is it right to pass just `null` for the false block, when we use the ternary? – Ceylan Mumun Kocabaş Sep 14 '16 at 10:47
1

You could. I wouldn't use it. I use ternary when I know I have 2 operations. If just care about the `true` or `false` condition I would use it this way. It's more a preference then anything @CeylanMumunKocabaş – taguenizy Sep 14 '16 at 10:51
Edited @RobG. Thanks for the correction ;) – taguenizy Sep 14 '16 at 10:59
1

@CeylanMumunKocabaş—you can do that, but it's more to type and not as clear as using a simple *if*. – RobG Sep 14 '16 at 11:02

score 3 · Answer 2 · answered Sep 14 '16 at 10:47

3

You can do:

variable && block

For example:

let variable = true;
let o = variable && 3;

answered Sep 14 '16 at 10:47

Nitzan Tomer

2 Answers2