javascript - How to I execute multiple functions on the result of a ternary operation?

Question

I have an if/else statement that results in two functions being called if it evaluates as true.

if (isTrue) {
    functionOne();
    functionTwo();
} 
else {
    functionThree();
}

I would like to be able to put that in a ternary statement like this:

isTrue ? (functionOne(), functionTwo()) : functionThree();

Is this possible?

Answer 1

Your example is indeed valid javascript. You can use a comma to separate expressions, and wrap that in a single statement with parentheses for the ternary.

var functionOne   = function() { console.log(1); }
var functionTwo   = function() { console.log(2); }
var functionThree = function() { console.log(3); }
var isTrue = true;

isTrue ? (functionOne(), functionTwo()) : functionThree();
// 1
// 2

isTrue = false;
isTrue ? (functionOne(), functionTwo()) : functionThree();
// 3

However, this is not advisable. Your version with an if statement is far more clear and readable, and will execute just as fast. In most codebases I've ever seen or worked with, the comma operator is never used this way as it's far more confusing than it is helpful.

Just because you can, doesn't mean you should.