javascriptecmascript-6

Can I conditionally pass a property into an object?


Is it possible to conditionally pass a property into an object-based function:

myFunction
      .x()
      .y()
      .x();

Here, I'd like to only pass in y() based on a condition, something like:

myFunction
      .x()
      [isTrue && y()]
      .x();

Any help much appreciated, thanks 🙂


Solution

  • You could use that syntax if you wanted to choose between different methods dynamically. But there's no "do nothing" method that you can substitute in place of y when the condition is false.

    Use an if statement instead.

    let temp = myFunction.x();
    if (isTrue) {
        temp = temp.y();
    }
    temp.x()