Backend Development
Golang
chromedp How to select specific textarea from multiple textareas with dynamic names
chromedp How to select specific textarea from multiple textareas with dynamic names
I have a page with multiple text areas consisting of dynamic names and the same class. This means I can't select them by id, name, class or type.
All I know is that out of the 5 textareas, I need the first one, and I want to change the value of that textarea.
Can anyone tell me how to do this using chromedp? Been trying for two days with no progress.
Find the answer:
const n = document.querySelector('.elementor-repeater-fields:nth-child(2) textarea'); console.log(n);
Correct answer
Use pseudo-class :first-child a> or :nth-child to select the target element. For example:
package main
import (
"context"
"fmt"
"net/http"
"net/http/httptest"
"time"
"github.com/chromedp/chromedp"
)
func main() {
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
fmt.Fprint(w, `
<html>
<body>
<textarea></textarea>
<textarea></textarea>
<textarea></textarea>
</body>
</html>
`)
}))
defer ts.Close()
opts := append(chromedp.DefaultExecAllocatorOptions[:],
chromedp.Flag("headless", false),
)
ctx, cancel := chromedp.NewExecAllocator(context.Background(), opts...)
defer cancel()
ctx, cancel = chromedp.NewContext(ctx)
defer cancel()
err := chromedp.Run(ctx,
chromedp.Navigate(ts.URL),
chromedp.Sleep(time.Second),
chromedp.SetValue(`body>textarea:first-child`, "hello world!", chromedp.ByQuery),
chromedp.Sleep(time.Second),
chromedp.SetValue(`body>textarea:nth-child(2)`, "hello chromedp!", chromedp.ByQuery),
chromedp.Sleep(3*time.Second),
)
if err != nil {
panic(err)
}
}
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