title: How can I add a drop-down menu to change the theme of sci chart using html and js?
body: <p><a href="https://i.stack.imgur.com/8fcld.png" rel="nofollow noreferrer">enter image description here</a>I have an XY sci chart in which I added two line charts with dummy data .Then I added a drop-down menu . <strong>How can I add a drop-down menu to change the theme of sci chart</strong> using <strong>html</strong> <strong>css</strong> and <strong>js</strong> in <em><a href="https://i.stack.imgur.com/Zhp7U.png" rel="nofollow noreferrer">visual studio code</a></em>?</p>