在 Delphi 中调用 JavaScript(1)
源码下载: https://files.cnblogs.com/del/Dephi-JavaScript.rar
本例测试用的 Html 文件(包含三个要测试的 Js 函数):
本例效果图:
代码文件:
本例测试用的 Html 文件(包含三个要测试的 Js 函数):
<html>
<head>
<title></title>
<SCRIPT LANGUAGE=javascript>
<!-- //重复字符串的函数
function JsStr2(str) {
return str + str;
}
//计算一个数的倍数的函数
function JsNum2(num) {
return num + num; }
//弹出信息框的函数
function JsMsg(msg) {
alert(msg); }
//-->
</SCRIPT>
</head>
<body>
</body>
</html>
本例效果图:
代码文件:
窗体文件:unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, OleCtrls, SHDocVw;
type
TForm1 = class(TForm)
WebBrowser1: TWebBrowser;
Button1: TButton;
Button2: TButton;
Button3: TButton;
procedure FormCreate(Sender: TObject);
procedure Button1Click(Sender: TObject);
procedure Button2Click(Sender: TObject);
procedure Button3Click(Sender: TObject);
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
procedure TForm1.FormCreate(Sender: TObject);
var
HtmlPath: string;
begin
WebBrowser1.Left := -WebBrowser1.Width; {隐藏 WebBrowser1}
HtmlPath := ExtractFilePath(ParamStr(0)) + 'Test.htm';
WebBrowser1.Navigate(HtmlPath);
end;
procedure TForm1.Button1Click(Sender: TObject);
var
str: Variant;
begin
str := WebBrowser1.OleObject.document.parentWindow.JsStr2('12345');
ShowMessage(str);
end;
procedure TForm1.Button2Click(Sender: TObject);
var
num: Variant;
begin
num := WebBrowser1.OleObject.document.parentWindow.JsNum2(4);
ShowMessage(num);
end;
procedure TForm1.Button3Click(Sender: TObject);
begin
WebBrowser1.OleObject.document.parentWindow.JsMsg('ABC');
{也可以这样:}
WebBrowser1.OleObject.document.parentWindow.execScript('JsMsg("ABCDEFG")', 'JavaScript');
end;
end.
object Form1: TForm1
Left = 0
Top = 0
Caption = 'Form1'
ClientHeight = 167
ClientWidth = 280
Color = clBtnFace
Font.Charset = DEFAULT_CHARSET
Font.Color = clWindowText
Font.Height = -11
Font.Name = 'Tahoma'
Font.Style = []
OldCreateOrder = False
Position = poDesktopCenter
OnCreate = FormCreate
PixelsPerInch = 96
TextHeight = 13
object WebBrowser1: TWebBrowser
Left = 64
Top = 48
Width = 154
Height = 97
TabOrder = 0
ControlData = {
4C000000EB0F0000060A00000000000000000000000000000000000000000000
000000004C000000000000000000000001000000E0D057007335CF11AE690800
2B2E126208000000000000004C0000000114020000000000C000000000000046
8000000000000000000000000000000000000000000000000000000000000000
00000000000000000100000000000000000000000000000000000000}
end
object Button1: TButton
Left = 104
Top = 40
Width = 75
Height = 25
Caption = 'Button1'
TabOrder = 1
OnClick = Button1Click
end
object Button2: TButton
Left = 104
Top = 81
Width = 75
Height = 25
Caption = 'Button2'
TabOrder = 2
OnClick = Button2Click
end
object Button3: TButton
Left = 104
Top = 120
Width = 75
Height = 25
Caption = 'Button3'
TabOrder = 3
OnClick = Button3Click
end
end
