Using chromedp , how can i check if an element is present on the page?

<p>i used to do that with python and selenium user = browser.find_element_by_css_selector(user_input) this gives me a pointer to the element or nil value , which i can check to see if the element is there but how can i do that with chromedp</p> <hr/>**评论：**<br/><br/>raff99: <pre><p>Chrome debugger protocol has DOM.QuerySelector and DOM.QuerySelectorAll methods. Not sure how they are exposed in chromedp.</p> <p>I tried them out with my implementation: <a href="https://github.com/raff/godet/blob/fa9486a9c62f0a3eec7474be590c87e1a407f9a6/cmd/godet/main.go#L413" rel="nofollow">https://github.com/raff/godet/blob/fa9486a9c62f0a3eec7474be590c87e1a407f9a6/cmd/godet/main.go#L413</a></p></pre>