Try ParenScript

(defun factorial (n)
  (if (< n 1)
      1
      (* n (factorial (- n 1)))))

function factorial(n) {
    if (n < 1) {
        return 1;
    } else {
        return n * factorial(n - 1);
    }
}

(@ ($ "div") length)

$("div").length;

(chain ($ "h1")
       (css "color" "green")
       (html "Header 1")
       (click (lambda ()
                (alert "Clicked!"))))

$("h1").css("color", "green")
       .html("Header 1")
       .click(function () {
                  alert("Clicked!");
              });