I'm just getting into using Delphi with Spidermonkey. Previously I would load a web page into a TWebBrowser component and interact with the Javascript code in the loaded web page. This was messy because to return values back to delphi I had to load them into a DOM object via the Javascript code and then inspect the DOM from Delphi to find that object and access it's value property.
With Spidermonkey, can I execute a specific Javascript function and get the return value easily and directly back into Delphi? If so, please point me to a quick code example that would be helpful. The 3 samples that came with Spidermonkey don't seem to get into this.
> With Spidermonkey, can I execute a specific Javascript function and get the return value easily and directly back into Delphi?
Yes, it possible. Sample compatible with Delphi XE2/XE4.
var
recFunction,
recReturnValue,
recJSVar : jsval;
........
//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
//-=- Find entry point to function.
//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
if JS_LookupProperty (TSMJSEngine.Context, TSMJSEngine.Global.JSObject, PAnsiChar (AnsiString (strFunctionToRun)), @recFunction) <> js_true then
begin
//-=- Everything very bad :)
end;
if recFunction.asPtr = nil then
begin
//-=- Everything very bad :)
end;
//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
//-=- Call function
//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
if JS_CallFunctionValue (TSMJSEngine.Context, TSMJSEngine.Global.JSObject, recFunction, 0, nil, @recReturnValue) = Integer (false) then
begin
//-=- Everything very bad :)
end;
//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
//-=- Get returning result (type: string).
//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
strResult := JSValToString (TSMJSEngine.Context, recReturnValue);
我对delphi一无所知,但听起来你想要设置某种类型的api或路由,以便在前端/后端系统之间进行传输。
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