如何在与元素B交互时激活元素A上的引导工具提示？

<div id="elementA" class="tooltip">
  <span class="tooltip-text">这是元素A的引导工具提示</span>
</div>

<button id="elementB">与元素B交互</button>

.tooltip {
  position: relative;
  display: none;
}

.tooltip-text {
  position: absolute;
  top: -30px;
  left: 0;
  background-color: #000;
  color: #fff;
  padding: 5px;
  border-radius: 5px;
}

var elementA = document.getElementById('elementA');
var elementB = document.getElementById('elementB');

elementB.addEventListener('click', function() {
  elementA.style.display = 'block';
});

elementB.addEventListener('mouseout', function() {
  elementA.style.display = 'none';
});