让innerHTML获取的内容包含input和select(option)的最新值

function refreshData(){

    var allInputObject=document.body.getElementsByTagName("input");

    for (i = 0; i < allInputObject.length; i++) {

        if(allInputObject[i].type=="checkbox")  {

                if (allInputObject[i].checked )

                       allInputObject[i].setAttribute("checked","checked");

                       else

                    allInputObject[i].removeAttribute("checked");

        }else if(allInputObject[i].type=="radio")  {

                if (allInputObject[i].checked )

                       allInputObject[i].setAttribute("checked","checked");

                       else

                    allInputObject[i].removeAttribute("checked");

        }else{

            allInputObject[i].setAttribute("value",allInputObject[i].value);

        }

    };

    for (i = 0; i < document.getElementsByTagName("select").length; i++) {

        var sl=document.getElementsByTagName("select")[i];

        for (j = 0; j < sl.options.length; j++) {

        if (sl.options[j].selected)

                     sl.options[j].setAttribute("selected","selected");

        else sl.options[j]=new Option(sl.options[j].text,sl.options[j].value);

        };

    };

    var textareas = document.body.getElementsByTagName("textarea");

    for (i = 0; i < textareas.length; i++) {

        textareas[i].innerHTML=textareas[i].value;

        textareas[i].style.overflow="hidden";

        textareas[i].style.backgroundAttachment="fixed";

        textareas[i].style.backgroundRepeat="no-repeat";

        textareas[i].style.borderStyle="solid";

        textareas[i].style.borderColor="#FFFFFF";

        textareas[i].style.resize="none";

    }

    var ths = document.body.getElementsByTagName("th");

    for (i = 0; i < ths.length; i++) {

        ths[i].style.border="1px solid #000000";

    }

    var tds = document.body.getElementsByTagName("td");

    for (i = 0; i < tds.length; i++) {

        tds[i].style.border="1px solid #000000";

    }

    var h2s = document.body.getElementsByTagName("h2");

    for (i = 0; i < h2s.length; i++) {

        h2s[i].style.textAlign="center";

    }

    var h1s = document.body.getElementsByTagName("h1");

    for (i = 0; i < h1s.length; i++) {

        h1s[i].style.textAlign="center";

    }

};