Question

In Ruby, I can write a || b and the function will choose a if it exists, and if not, b.

How can I do this in JQuery without writing something grossly cumbersome like:

if (a){
  a
} else {
  b
}

Also, does JQuery have an equivalent to Ruby’s a ||= b?

Answer 1

jQuery is just a JavaScript library and in JavaScript we have the same.

var c = a || b;

This is because

If the first object is truthy, that gets returned. Otherwise, the second object gets returned.