Javascript Ternary operator with empty else

Question

I\'m trying to convert the following if-else to it\'s ternary operator representation in javascript as follows

var x = 2;
if (x === 2) {alert(\"2\");}
else
          


        

Answer 1

you have a few options to do this nicely in one line:

option1 - noop function

set a global noop function:

function noop(){}
(t==2)?(alert("1")):(noop());

option2 - && operator

when you use && operater, operands are evaluted only if previos ones where true, so you could miply write:

(t==2) && alert("1");

or, for exapmle if you have an arry you want to push to, you could test it is not null before:

arr && arr.push(obj)