本例效果图:
 

 

 

代码文件:

---

unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls;
type
TForm1 = class(TForm)
Memo1: TMemo;
Button1: TButton;
Edit1: TEdit;
Label1: TLabel;
procedure Button1Click(Sender: TObject);
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
uses ComObj;
{此函数需要 ComObj 单元的支持}
{参数 JsCode 是要执行的 Js 代码; 参数 JsVar 是要返回的变量}
function RunJs(const JsCode, JsVar: string): string;
var
script: OleVariant;
begin
try
script := CreateOleObject('ScriptControl');
script.Language := 'JavaScript';
script.ExecuteStatement(JsCode);
Result := script.Eval(JsVar);
except
Result := '';
end;
end;
procedure TForm1.Button1Click(Sender: TObject);
var
s: string;
begin
s := RunJs(Memo1.Text, 'str');
ShowMessage(s);
end;
end.