Golang Chromedp reload current page until find some html object

Question

chromedp.Navigate(tragetUrl),
chromedp.WaitVisible("#button"),
chromedp.Click("#button"),

Goal: if #button is not exist then reload the current page until button appear and click it

The #button appears at random times and depending on the target website.

Is any good suggestions to achieve above goal?

Please clarify your specific problem or provide additional details to highlight exactly what you need. As it's currently written, it's hard to tell exactly what you're asking. — Community, Jan 17 '22 at 17:58

score 0 · Answer 1 · answered May 18 '22 at 04:27

The key is to use the option chromedp.AtLeast(0). See the demo below:

func ReloadUntilButtonAppears(ctx context.Context, targetURL string) error {
    var nodes []*cdp.Node
    for {
        if err := chromedp.Run(ctx,
            chromedp.Navigate(targetURL),
            // chromedp.AtLeast(0) makes the query return immediately
            // even if there are not nodes found.
            chromedp.Nodes("#button", &nodes, chromedp.ByQuery, chromedp.AtLeast(0)),
        ); err != nil {
            return err
        }
        if len(nodes) > 0 {
            return chromedp.Run(ctx, chromedp.MouseClickNode(nodes[0]))
        }
    }
}

Golang Chromedp reload current page until find some html object

1 Answers1