<a href="https://mebtte.com" target="_blank">mebtte.com</a>
<br>
<br>
<button type="button">触发链接的点击事件</button>

<script>
  const a = document.querySelector('a');
  
  a.addEventListener(
    'click',
    () => window.alert('a click'),
  );
  
  document.querySelector('button')
    .addEventListener(
      'click',
      () => {
        const event = new Event('click');
        a.dispatchEvent(event);
        window.alert('after dispatch event');
      },
    );
  
</script>