如何简化这个JavaScript函数。我有100个按钮控制100个内容区域的显示/隐藏显示

<button class="toggle-btn" data-target="content-1">按钮1</button>
<button class="toggle-btn" data-target="content-2">按钮2</button>
<!-- 其他按钮... -->

<div id="content-1" class="content">内容1</div>
<div id="content-2" class="content">内容2</div>
<!-- 其他内容区域... -->

document.addEventListener('click', function(event) {
  if (event.target.classList.contains('toggle-btn')) {
    var targetId = event.target.dataset.target;
    var targetContent = document.getElementById(targetId);
    
    if (targetContent) {
      targetContent.classList.toggle('show');
    }
  }
});

.content {
  display: none;
}

.content.show {
  display: block;
}