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I have this code.

document.querySelectorAll('.button-collapse').forEach(button => {
  button.addEventListener("click", () => {
    const collapseBox = button.nextElementSibling;
    
    button.classList.toggle('active-btn');
    collapseBox.classList.toggle('active');
  });
});

document.querySelectorAll('.button-collapse').forEach(button => {
  button.addEventListener("click", () => {
    const collapseBox = button.nextElementSibling;
    
    button.classList.toggle('active-btn');
    collapseBox.classList.toggle('active');
  });
});

document.querySelectorAll('.button-collapse').forEach(button => {
  button.addEventListener("click", () => {
    const collapseBox = button.nextElementSibling;
    
    button.classList.toggle('active-btn');
    collapseBox.classList.toggle('active');
  });
});

document.querySelectorAll('.button-collapse').forEach(button => {
  button.addEventListener("click", () => {
    const collapseBox = button.nextElementSibling;
    
    button.classList.toggle('active-btn');
    collapseBox.classList.toggle('active');
  });
});

Basically a collapsible box.

I wanted to make it so, whenever a different one gets opened, collapses the last one, but haven't been able to wrap my head around it. Tried some if statements, but can't quite find the logic.

Is there a way to make that?

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