CodePen Embed - LYOoXJr

<select name="" id="select">
  <option value="https://www.google.com/">google</option>
  <option value="https://yandex.ru/">yandex</option>
</select>

<a id="link" target="_blank" href="https://www.google.com/">Link</a>

document.getElementById('select').addEventListener('change', function() {
  document.getElementById('link').setAttribute("href", this.value);
});

This Pen is owned by iBird Rose on CodePen.

See more by @ibird on CodePen

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

This Pen doesn't use any external JavaScript resources.