[jQuery] Looking for correct Jquery AJAX statement

[Jack]

Hello everyone,

I want to translate this

var chk1 = document.getElementById('city').value + '*' ...
var string= '<iframe name="cwindow" style="border:0px solid purple"
width=980 height=1500 src="s30.php?id=' + chk1 + '"><\/iframe>';

into

$("#feeds").get(chk1); or $("#feeds").get("s30.php?id=' + chk1 + '");
or $("#feeds").get("s30.php", { id: chk1 })

Which jquery expression is correct?

Than you for help