一个问题提交的实例(js原生动画，原生ajax，js引用加参数)

document.writeln("<div id=\"tanchuangwai\" class=\"tanchuangwai\" style=\"z-index:999;overflow:hidden;font-family:微软雅黑; background:#6cadde; width:236px; height:29px; line-height:29px; float:left; border-radius:3px 3px 0 0; position:fixed; bottom:0; right:0;\">");
document.writeln("  <h3 style=\" height:29px; width:100px; color:#ffffff; font-size:12px; float:left; padding:0 0 0 10px; font-weight:normal; margin:0;\">请您留言</h3>");
document.writeln("  <span id=\"dakai\" class=\"guanbi\" style=\" color:#ffffff; font-size:11px; height:29px; float:right; margin:0 5px 0 0; cursor:pointer;\" id=\"guanbi\" onclick=\"goPanel();\">打开</span></div>");
document.writeln("<div id=\"tanchuang\" class=\"tanchuang\" style=\"z-index:999;overflow:hidden;font-family:微软雅黑; position:fixed; width:236px; background:#ffffff; right:0; bottom:0px; display:none;\">");
document.writeln("  <div style=\"background:#6cadde; width:236px; height:29px; line-height:29px; float:left; border-radius:3px 3px 0 0;\">");
document.writeln("    <h3 style=\" height:29px; width:100px; color:#ffffff; font-size:12px; float:left; padding:0 0 0 10px; font-weight:normal; margin:0;\">请您留言</h3>");
document.writeln("    <span id=\"guanbi\" class=\"guanbi\" style=\" color:#ffffff; font-size:11px; height:29px; float:right; margin:0 5px 0 0; cursor:pointer;\" onclick=\"goClose();\">关闭</span></div>");
document.writeln("  <div style=\" width:194px; float:left; padding:0 20px; border-left:1px solid #6cadde; border-right:1px solid #6cadde; border-bottom:1px solid #6cadde; background:#f5f5f5;\">");
document.writeln("    <textarea id=\"pArea\" style=\" font-family:微软雅黑; width:182px; height:80px; border:1px solid #cccccc; background:#ffffff; padding:5px; color:#a9a9a9; font-size:12px; line-height:20px; float:left; margin:10px 0 10px 0;\" placeholder=\"请输入问题描述\"></textarea>");
document.writeln("    <div style=\"width:192px; border:1px solid #cccccc; height:20px; line-height:20px; float:left; margin:0 0 10px 0;\"><span style=\" width:32px; height:20px; font-size:12px; color:#666666; text-align:center; float:left; background:#f2f2f2; border-right: 1px solid #cccccc;\">类型</span>");
document.writeln("      <select id=\"pSel\" name=\"select\" style=\" font-family:微软雅黑; background:#ffffff; float:left; border:none; color:#a9a9a9; padding:0 0 0 7px; width:159px;\">");
document.writeln("        <option value=\"系统异常\">系统异常</option>");
document.writeln("        <option value=\"功能操作\">功能操作</option>");
document.writeln("        <option value=\"功能体验\">功能体验</option>");
document.writeln("      </select>");
document.writeln("    </div>");
document.writeln("    <div style=\"width:192px; border:1px solid #cccccc; height:20px; line-height:20px; float:left; margin:0 0 10px 0;\"><span style=\" width:32px; height:20px; font-size:12px; color:#666666; text-align:center; float:left; background:#f2f2f2; border-right: 1px solid #cccccc;\">姓名</span>");
document.writeln("      <input id=\"pName\" type=\"text\"/ placeholder=\"请输入您的姓名\" style=\" font-family:微软雅黑; background:#ffffff; float:left; border:none; color:#a9a9a9; padding:0 0 0 10px; width:149px;\">");
document.writeln("    </div>");
document.writeln("    <div style=\"width:192px; border:1px solid #cccccc; height:20px; line-height:20px; float:left; margin:0 0 10px 0;\"><span style=\" width:32px; height:20px; font-size:12px; color:#666666; text-align:center; float:left; background:#f2f2f2; border-right: 1px solid #cccccc;\">电话</span>");
document.writeln("      <input id=\"pTel\" type=\"text\"/ placeholder=\"请输入您的电话\" style=\" font-family:微软雅黑; background:#ffffff; float:left; border:none; color:#a9a9a9; padding:0 0 0 10px; width:149px;\">");
document.writeln("    </div>");
document.writeln("    <input style=\" font-family:微软雅黑; background:#6cadde; border-radius:5px; width:91px; height:23px; text-align:center; color:#000000; line-height:23px; margin:10px 51px; border:none; cursor:pointer;\" type=\"button\" value=\"提交\" onclick=\"sub();\" />");
document.writeln("  </div>");
document.writeln("</div>");

var url = "XXX";
var par;

var a = document.getElementById("tanchuangwai");
var b = document.getElementById("guanbi");
var p; 
var s;
var h;
function goPanel(){
    document.getElementById("tanchuangwai").style.display = "none";
    p = document.getElementById("tanchuang");
    p.style.display = "block";
    p.style.height = "29px";
    s = setInterval(upPanel,1);
}
function goClose(){
    p = document.getElementById("tanchuang");
    h = setInterval(downPanel,1);
}
function upPanel(){
    var height = parseInt(p.style.height.replace("px",""));
    height = height + 3;
    p.style.height = height+"px";
    if(height >= 281){
        clearInterval(s);
    }
}
function downPanel(){
    var height = parseInt(p.style.height.replace("px",""));
    height = height - 3;
    p.style.height = height+"px";
    if(height <= 29){
        clearInterval(h);
        p.style.display = "none";
        document.getElementById("tanchuangwai").style.display = "block";
    }
}
function ajax(){
    var oAjax = null;
    if(window.XMLHttpRequest){
        oAjax = new XMLHttpRequest();
    }else{
        oAjax = new ActiveXObject("Microsoft.XMLHTTP");
    };
     
    oAjax.open('POST', url, true); 
    oAjax.setRequestHeader("Content-type","application/x-www-form-urlencoded");
    var area = document.getElementById("pArea").value;
    var sel = document.getElementById("pSel").value;
    var name = document.getElementById("pName").value;
    var tel = document.getElementById("pTel").value;
    var url1 = window.location.href;
    oAjax.send("area=" + area + "&sel=" + sel + "&name=" + name + "&tel=" + tel + "&par=" + par + "&url=" + url1);
      
    oAjax.onreadystatechange = function(){ 
        if(oAjax.readyState == 4){  
            if(oAjax.status == 200){   
                alert(oAjax.responseText) 
            }else{
                alert("请求错误");
            }
        }
    };
}
function sub() {
    var js = document.getElementsByTagName("script");
    for (var i = 0; i < js.length; i++) {
        if (js[i].src.indexOf("panel.min.js") >= 0) {
            var arraytemp = new Array();
            arraytemp = js[i].src.split('?');
            arraytemp = arraytemp[1].split('=');
            if (arraytemp[0] == 'value') {
                par = arraytemp[1];
            }
        }
    };
    ajax();
}

 同样的代码，这是修改后的使用ajax上传图片的代码：

var url = "http://XXX";
document.writeln("<div id=\"tanchuangwai\" class=\"tanchuangwai\" style=\"z-index:999;overflow:hidden;font-family:微软雅黑; background:#6cadde; width:236px; height:29px; line-height:29px; float:left; border-radius:3px 3px 0 0; position:fixed; bottom:0; right:0;\">");
document.writeln("  <h3 style=\" height:29px; width:100px; color:#ffffff; font-size:12px; float:left; padding:0 0 0 10px; font-weight:normal; margin:0;\">请您留言</h3>");
document.writeln("  <span id=\"dakai\" class=\"guanbi\" style=\" color:#ffffff; font-size:11px; height:29px; float:right; margin:0 5px 0 0; cursor:pointer;\" id=\"guanbi\" onclick=\"goPanel();\">打开</span></div>");
document.writeln("<div id=\"tanchuang\" class=\"tanchuang\" style=\"z-index:999;overflow:hidden;font-family:微软雅黑; position:fixed; width:236px; background:#ffffff; right:0; bottom:0px; display:none;\">");
document.writeln("  <div style=\"background:#6cadde; width:236px; height:29px; line-height:29px; float:left; border-radius:3px 3px 0 0;\">");
document.writeln("    <h3 style=\" height:29px; width:100px; color:#ffffff; font-size:12px; float:left; padding:0 0 0 10px; font-weight:normal; margin:0;\">请您留言</h3>");
document.writeln("    <span id=\"guanbi\" class=\"guanbi\" style=\" color:#ffffff; font-size:11px; height:29px; float:right; margin:0 5px 0 0; cursor:pointer;\" onclick=\"goClose();\">关闭</span></div>");
document.writeln("  <div style=\" width:194px; float:left; padding:0 20px; border-left:1px solid #6cadde; border-right:1px solid #6cadde; border-bottom:1px solid #6cadde; background:#f5f5f5;\">");
document.writeln("    <textarea id=\"pArea\" name='area' style=\" font-family:微软雅黑; width:182px; height:80px; border:1px solid #cccccc; background:#ffffff; padding:5px; color:#a9a9a9; font-size:12px; line-height:20px; float:left; margin:10px 0 10px 0;\" placeholder=\"请输入问题描述(少于200字)\"></textarea>");
document.writeln("    <div style=\"width:192px; border:1px solid #cccccc; height:20px; line-height:20px; float:left; margin:0 0 10px 0;\"><span style=\" width:32px; height:20px; font-size:12px; color:#666666; text-align:center; float:left; background:#f2f2f2; border-right: 1px solid #cccccc;\">类型</span>");
document.writeln("      <select id=\"pSel\" name=\"sel\" style=\" font-family:微软雅黑; background:#ffffff; float:left; border:none; color:#a9a9a9; padding:0 0 0 7px; width:159px;\">");
document.writeln("        <option value=\"系统异常\">系统异常</option>");
document.writeln("        <option value=\"功能操作\">功能操作</option>");
document.writeln("        <option value=\"功能体验\">功能体验</option>");
document.writeln("      </select>");
document.writeln("    </div>");
document.writeln("    <div style=\"width:192px; border:1px solid #cccccc; height:20px; line-height:20px; float:left; margin:0 0 10px 0;\"><span style=\" width:32px; height:20px; font-size:12px; color:#666666; text-align:center; float:left; background:#f2f2f2; border-right: 1px solid #cccccc;\">姓名</span>");
document.writeln("      <input id=\"pName\" name='name' type=\"text\"/ placeholder=\"请输入您的姓名\" style=\" font-family:微软雅黑; background:#ffffff; float:left; border:none; color:#a9a9a9; padding:0 0 0 10px; width:149px;\">");
document.writeln("    </div>");
document.writeln("    <div style=\"width:192px; border:1px solid #cccccc; height:20px; line-height:20px; float:left; margin:0 0 10px 0;\"><span style=\" width:32px; height:20px; font-size:12px; color:#666666; text-align:center; float:left; background:#f2f2f2; border-right: 1px solid #cccccc;\">电话</span>");
document.writeln("      <input id=\"pTel\" name='tel' type=\"text\"/ placeholder=\"请输入您的电话\" style=\" font-family:微软雅黑; background:#ffffff; float:left; border:none; color:#a9a9a9; padding:0 0 0 10px; width:149px;\">");
document.writeln("    </div>");
document.writeln("    <div style=\"width:192px; border:1px solid #cccccc; height:20px; line-height:20px; float:left; margin:0 0 10px 0;\"><span style=\" width:32px; height:20px; font-size:12px; color:#666666; text-align:center; float:left; background:#f2f2f2; border-right: 1px solid #cccccc;\">上传</span>");
document.writeln("      <input type='file' id='img' name='img' value='' style='width:150px;height:20px;' accept='.jpg,.bmp'/>");
document.writeln("    </div>");
document.writeln("    <input style=\" font-family:微软雅黑; background:#6cadde; border-radius:5px; width:91px; height:23px; text-align:center; color:#000000; line-height:23px; margin:10px 51px; border:none; cursor:pointer;\" type=\"button\" value=\"提交\" onclick=\"sub();\" />");
document.writeln("  </div>");
document.writeln("</div>");
document.writeln("<input type='hidden' name='par' id='par' value=''/>");

var par;
var upload = "WebForm3.aspx";

var a = document.getElementById("tanchuangwai");
var b = document.getElementById("guanbi");
var p; 
var s;
var h;
var scs;
function goPanel(){
    document.getElementById("tanchuangwai").style.display = "none";
    p = document.getElementById("tanchuang");
    p.style.display = "block";
    p.style.height = "28px";
    s = setInterval(upPanel,1);
}
function goClose(){
    p = document.getElementById("tanchuang");
    h = setInterval(downPanel,1);
}
function upPanel(){
    var height = parseInt(p.style.height.replace("px",""));
    height = height + 3;
    p.style.height = height+"px";
    if(height >= 313){
        clearInterval(s);
    }
}
function downPanel(){
    var height = parseInt(p.style.height.replace("px",""));
    height = height - 3;
    p.style.height = height+"px";
    if(height <= 29){
        clearInterval(h);
        p.style.display = "none";
        document.getElementById("tanchuangwai").style.display = "block";
    }
}
function ajax(){
    var oAjax = null;
    if(window.XMLHttpRequest){
        oAjax = new XMLHttpRequest();
    }else{
        oAjax = new ActiveXObject("Microsoft.XMLHTTP");
    };
     
    oAjax.open('POST', url, true);
    var area = document.getElementById("pArea").value;
    var sel = document.getElementById("pSel").value;
    var name = document.getElementById("pName").value;
    var tel = document.getElementById("pTel").value;
    var url1 = window.location.href;
    var fd = new FormData();
    fd.append('area', area);
    fd.append('sel', sel);
    fd.append('name', name);
    fd.append('tel', tel);
    fd.append('par', par);
    fd.append('url', url1);
    fd.append("img", document.getElementById("img").files[0]);
    oAjax.send(fd);
      
    oAjax.onreadystatechange = function(){ 
        if(oAjax.readyState == 4){  
            if(oAjax.status == 200){   
                alert(oAjax.responseText) 
            }else{
                alert("请求错误");
            }
        }
    };
}
function sub() {
    var js = document.getElementsByTagName("script");
    for (var i = 0; i < js.length; i++) {
        if (js[i].src.indexOf("panel.js") >= 0) {
            var arraytemp = new Array();
            arraytemp = js[i].src.split('?');
            arraytemp = arraytemp[1].split('=');
            if (arraytemp[0] == 'value') {
                par = arraytemp[1];
            }
        }
    };
    document.getElementById("par").value = par;
    ajax();
}