Pass a variable by reference from Angular2 template

Question

Let's say I have a variable called isVisible. And I have a method called

ReverseVariable(variable: boolean)
{
   variable = !variable;
}

I want to call this method from a template like

<button (click)="ReverseVariable(isVisible)"></button>

I want to give it isVisible in the parameters and have isVisible reverse itself. Something like the following example is not an option

ReverseVisibility()
{
  this.isVisible = !this.isVisible;
}

Is there any way that I can pass the variable by reference?

Answer 1

Not with a primitive data type like a boolean. What you could do is make a non-primitive like an object

isVisible = {
    flag: true
}

Then toggle that in your function

ReverseVisibility(isVisible)
{
   isVisible.flag = !isVisible.flag;
}