Home News DOC Class DL Others Rice
Class  >  jsexecutor  >  Execute(string,bool)
jsexecutor class : Execute(string,bool) method

Description

Executes JavaScript code.

Syntax

instance.Execute(string jscode, bool complement)

Arguments

ClassNameDescription
stringjscodeJavaScript code.
boolcomplementWhether to make it to the immediate function.

Return value

ClassDescription
stringReturn value from the JavaScript.

Sample code

1:

window w;

2:

jsexecutor jse = w.CurrentJSExecutor;

3:

string result = jse.Execute("alert('hello world!');", true); // It show dialog and return "null".

4:

result = jse.Execute("return 'hello world!';", true); // It occur an exception and return "null".

Notes

In the second argument, specifies whether to complemented the JavaScript code to the immediate function.

If true, it will be complemented. If false, it will not be complemented.

When it is complemented, it will be as follow.

return 'result'; -> (function (){return 'result';}());

Please be careful, you may get the unexpected result depending on the complement.


Please note that the return value is string.

If the result is a number, the number will be returned as a string. Example: 1-> '1' , 1.05-> '1.05'.

If the result is a boolean value, the value is returned as a string. Example: true -> 'true' / false -> 'false'

If the result is a string, the string will be enclosed in double quotes and returned. Example: 'Returned string' -> '"Returned string"'.

If the result is null, undefined, array, object, function object, or unevaluable, the string 'null' is returned.

The 'null' is also returned if the run raises an exception.

Links for reference

None.

Copyright © Rice All rights reserved.