PHP "??" operator in javascript [duplicate]

Question

Easy question. Does exist something like php's ?? in javascript?

In php you can do condition ?? statement2

which is the same as condition? condition : statement2.

Is there something like that in javascript?

@JordanRunning similar answer, but not directly comparing PHP to JS — ps2goat
– ps2goat, Commented Jun 6, 2018 at 19:13
@ps2goat In PHP ?? is called the null coalescing operator. The linked question is "Null coalescing operator Javascript." It's literally the same question, and the accepted answer there answers OP's question exactly. — Jordan Running
– Jordan Running, Commented Jun 6, 2018 at 19:15
True, but people don't always know the official names of things, so that question may not show up in their search. — ps2goat
– ps2goat, Commented Jun 6, 2018 at 19:22

Francesco · Accepted Answer · 2018-06-06 19:18:19Z

5

I would use the logical or operator (||)

console.log("true value" || "other")
console.log(false || "other")

This works because (source):

expr1 || expr2 Returns expr1 if it can be converted to true; otherwise, returns expr2

answered Jun 6, 2018 at 19:11

Francesco

4,3002 gold badges25 silver badges31 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Devin Fields · Accepted Answer · 2018-06-06 19:11:52Z

0

So, if condition is false, go with statement2.

That's as simple as condition || statement2

If condition is truthy, if will be selected. If not, statement2 will be evaluated.

answered Jun 6, 2018 at 19:11

Devin Fields

2,6142 gold badges14 silver badges18 bronze badges