静态页发表评论功能实现代码,Asp.Net代码库,德仔网

代码语言
代码分类
【Asp.Net】静态页发表评论功能实现
作者:石牌村夫 / 发布于2013/12/11/ 776
Code
<script src="ajax.js" type="text/javascript"></script>
<script type="text/javascript" language="javascript">
  function Comment()
  {
    var username=document.getElementById("username").value;
    var url="comment.aspx?username="+username";
    var content=document.getElementById("content").value;
    var date="content="+escape(content);
    var req=new WebRequest(url);
    req.Method = "POST";
    req.SetRequestHeader("Content-Length", date.length);
    req.SetRequestHeader("charset", "utf-8");
    req.SetRequestHeader("Content-Type", "application/x-www-form-urlencoded");
   
    req.onReady = function()
    {
      location.reload();
    }
    req.Send(date);
  }
</script>



这是在静态页面加上的JS代码，再在静态页的提交按纽写一个onclick事件就行.类似：



<input id="Button1" type="button" value="button" onclick="Comment()" />



comment.aspx只是执行服务器的代码，把用户发表的评论写进数据库。这个具体的代码就不给出了。



ajax.js代码如下：

functionWebRequest(url)
{
this.Method="GET";
this.Url=url;
this.Async=true;
this.Refresh=false;
this.onReady=null;
this.onLoad=null;
this.onError=null;
this.responseText=null;
this.responseXml=null;

varreq=GetRequest();
varheaders=newArray();

functionGetRequest()
{
varreq=null;

if(window.XMLHttpRequest)
{
req=newXMLHttpRequest();
}
elseif(window.ActiveXObject)
{
try
{
req=newActiveXObject("Msxml2.XMLHTTP");
}
catch(e)
{
req=newActiveXObject("Microsoft.XMLHTTP");
}
}

returnreq;
}



this.SetRequestHeader=function(name,value)
{
for(vari=0,j=headers.length;i<j;i++)
{
if(headers[i].Name==name)
{
headers[i]={Name:name,Value:value};
return;
}
}

var_header={Name:name,Value:value};
headers.push(_header);
}

this.Send=function(obj)
{
if(req==null)
{
alert("Can'tcreateobject.");
return;
}
if(this.Async)
{
varohttp=this;
req.onreadystatechange=function()
{
if(req.readyState==4)
{
if(req.status==200)
{
ohttp.responseText=req.responseText;
ohttp.responseXml=req.responseXML;

if(ohttp.onReady)
ohttp.onReady();
}
else
alert("Failed:"+req.status);
}
else
{
if(ohttp.onLoad)
ohttp.onLoad();
}
}
}


try
{
varrnd="";
if(this.Refresh)
{
rnd="webrequestrnd="+Math.random();
if(this.Url.indexOf("?")>=0)
rnd="&"+rnd;
else
rnd="?"+rnd;
}
req.open(this.Method,this.Url+rnd,this.Async);

for(vari=0,j=headers.length;i<j;i++)
{
varheader=headers[i];
req.setRequestHeader(header.Name,header.Value);
}

req.send(obj);
if(!this.Async)
{
this.responseText=req.responseText;
this.responseXml=req.responseXML;
}
}
catch(err)
{
if(this.onError)
this.onError(err);
else
alert("Failed:"+err.message);
}
}

this.Abort=function()
{
if(req!=null)req.abort();
}
}


functionResponseReader(response)
{
/*
<response>
<error>是否有错误（-无错误1-有错误）</error>
<message>返回信息</message>
<responsebody>返回结构</responsebody>
</response>
*/
this.hasError=false;
this.errorMessage="";
this.responseBody=null;
this.responseText="";

if(response!=null)
{
varerrcode,message,rbody,bodytext;

try
{
varresobj=response.getElementsByTagName("response")[0];
errcode=resobj.getElementsByTagName("error")[0].firstChild.nodeValue*1;
message=(resobj.getElementsByTagName("message")[0].firstChild)?resobj.getElementsByTagName("message")[0].firstChild.nodeValue:"";
rbody=resobj.getElementsByTagName("responsebody")[0].firstChild;
bodytext=(rbody)?rbody.nodeValue:"";
this.hasError=(errcode!=0);
this.errorMessage=message;
this.responseBody=rbody;
this.responseText=bodytext;
}
catch(err)
{
this.hasError=true;
this.errorMessage="返回信息格式错误";
this.responseBody=null;
this.responseText="";
}
}
}
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