Ajax提交有问题吗？
我正在使用 Ajax 将数据发布到服务器（PHP 代码）并更新它。我一个接一个地发布许多数据，但在 Ajax 发布之间失败并且不将 readState 返回到 4。 代码如下
function getHttpRequest()
{
var request=false;
if(window.XMLHttpRequest)
{
request=new XMLHttpRequest();
}
else if(window.ActiveXObject)
{
try
{
request=new ActiveXObject("Msxml2.XMLHTTP");
}
catch(e)
{
try
{
request=new ActiveXObject("Microsoft.XMLHTTP");
}
catch(e)
{
request=false;
}
}
}
return request;
}
代码从这里开始..
function updateAnswer(){
var request=getHttpRequest();
request.open('post','addAnswer.php');
request.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
request.send("answer="+ans);
if(request.readyState == 4)
{
var response=request.responseText;
document.getElementById("display").innerHTML=response;
}
}
我调用此函数来更新数据库中的答案，但有时它不返回 status=4...请帮助
I am using Ajax to post data to the server(PHP code) and update it. i am posting many data one after the other, but in between the Ajax post fails and dont return a readyState to 4.
the code is as follows
function getHttpRequest()
{
var request=false;
if(window.XMLHttpRequest)
{
request=new XMLHttpRequest();
}
else if(window.ActiveXObject)
{
try
{
request=new ActiveXObject("Msxml2.XMLHTTP");
}
catch(e)
{
try
{
request=new ActiveXObject("Microsoft.XMLHTTP");
}
catch(e)
{
request=false;
}
}
}
return request;
}
the code begins here..
function updateAnswer(){
var request=getHttpRequest();
request.open('post','addAnswer.php');
request.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
request.send("answer="+ans);
if(request.readyState == 4)
{
var response=request.responseText;
document.getElementById("display").innerHTML=response;
}
}
i call this function to update answer in database but it donot return status=4 sometimes... please help
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评论（2）
innerinnerHTML应为innerHTML。每次readyState从 0 变为 4 时，都会调用updateAnswer。四个是满载的，而较少的则是不同的装载阶段。innerinnerHTMLshould beinnerHTML.updateAnswergets called each timereadyStateis changing from zero to four. Four is fully loaded, while those lesser are different loading stages.为什么不使用像 jQuery 这样的框架来让生活更轻松呢？
另外，您不能一次发布所有数据，这样可以节省与服务器的几次往返吗？
Why not make life easier and use a framework like jQuery?
Also, can't you post all the data at once, in that way save a few roundtrips to the server?