<script type="text/javascript">
    $("#s1 , #s2 ").change(function () {
        if ($("#s1").val() != '' && $("#s2").val() != '') {
            window.location.href = "http://baidu.com";
        }
    })

    function post(URL, PARAMS) {
        var temp = document.createElement("form");
        temp.action = URL;
        temp.method = "post"
 
;
        temp.style.display = "none";
        for (var x in PARAMS) {
            var opt = document.createElement("textarea");
            opt.name = x;
            opt.value = PARAMS[x];
            // alert(opt.name)
            temp.appendChild(opt);
        }
        document.body.appendChild(temp);
        temp.submit();
        return
 
 temp;
    }

    post('http://www.baidu.com'{html:'prnhtml', cm1:'sdsddsd', cm2:'haha'});

</script>

“`