Javascript one line If, only state true [duplicate]

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;

Answer 1

if(variable) block;

With the conditional operator you need the false bit also.

Answer 2

You can do:

variable && block

For example:

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