Thanks a lot. In the mean while I also searched for it .
The solution I use is as follow:
create the elements you need on the page (a text element (e.g. #text122), a input field for text (#input1), a input field radio button (#radioGroup1)).
(these id’s are visible when you click the element, properties or left above the element it 's shown)
go to the corvid code below in the site editor and add some code, this code will overwrite the content of the elements. In my case it is executed during onReady (what ever it means it works)
$w.onReady( function () { let a = wixLocation.query.a
$w( ‘#input1’ ).value = a; //write value a in input field #input1
$w( ‘#text122’ ).text = a + " hello" ; //write value a with some text in text element #text122
$w( ‘#radioGroup1’ ).value = a; //select value in radio button
});
note: value “a” comes out of the url: e.g. www example com/website?a=testvalue