如何在delphi中使用TChromium与HTML表单进行交互

unit MainForm;

interface

uses
  // 引入必要的单元
  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
  Vcl.Controls, Vcl.Forms, Vcl.Dialogs, CefVCL, CefLib;

type
  TForm1 = class(TForm)
    Chromium1: TChromium;
    procedure FormCreate(Sender: TObject);
    procedure Chromium1LoadEnd(Sender: TObject; const browser: ICefBrowser; const frame: ICefFrame; httpStatusCode: Integer);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);
begin
  // 设置Chromium的属性
  Chromium1.CreateBrowser('about:blank');
end;

procedure TForm1.Chromium1LoadEnd(Sender: TObject; const browser: ICefBrowser; const frame: ICefFrame; httpStatusCode: Integer);
begin
  // 在网页加载完毕后执行JavaScript代码
  if frame.IsMain then
  begin
    Chromium1.Browser.MainFrame.ExecuteJavaScript('document.getElementById("username").value = "admin";', '', 0);
    Chromium1.Browser.MainFrame.ExecuteJavaScript('document.getElementById("password").value = "123456";', '', 0);
    Chromium1.Browser.MainFrame.ExecuteJavaScript('document.forms[0].submit();', '', 0);
  end;
end;

end.