Get text from input text field in WKWebView-CodePudding

I am working with WKWebView and loaded url in the same web-view which is having login page (email and password input text).

email input text field like this:

<input type="email" placeholder="" data-automation-id="email" name="email" maxlength="256" value="">

Can someone guide me that how to get the value this input text?

 webView.evaluateJavaScript("document.getElementById('email').value", completionHandler: { (jsonRaw: Any?, error: Error?) in
            guard let jsonString = jsonRaw as? String else { return }
            print(js)
        })

Tried this but not working :(

TIA

CodePudding user response：

The input tag doesn't have an id of email which is why the lookup by id is failing. Update the web page so the input tag has an id set to email.

<input id="email"  type="email" placeholder="" data-automation-id="email" name="email" maxlength="256" value="">

With the id="email" added, the document.getElementById('email').value should find the input and give you the value.

CodePudding user response：

If you don't want to add id to the element, use getElementsByClassName instead which returns an array and pick the first element to read the value of the email field:

Example:

func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
    webView.evaluateJavaScript("document.getElementsByClassName('input')[0].value") {(result, error) in
        guard error == nil else {
            print(error!)
            return
        }
        
        print(String(describing: result))
    }
}

Sample HTML string used for testing:

<html>
  <body>
      <input  type="email" placeholder="" data-automation-id="email" name="email" maxlength="256" value="5556454">
  </body>
</html>