Question

我是ajax的新手。我刚开始学习它。下面是我的第一个ajax脚本。在教程中，相同的脚本显示状态200，但是当我在浏览器上运行时，状态为0.此外，输出仅显示在firefox，chrome和IE中，不显示输出

window.onload=onload_ajax;
var xhr=false;
function onload_ajax() 
{
if(XMLHttpRequest())
    xhr= new XMLHttpRequest();
else if(window.ActiveXObject){
    xhr= new ActiveXObject("Microsoft.XMLHTTP");
    }
if(xhr){
    xhr.onreadystatechange=showState;
    xhr.open("GET","colors.xml",true);
    xhr.send(null);
    }
    else document.getElementById('updateArea').innerHTML="Ahh... Some Error..!!";

}

function showState(){

    var curmsg= document.getElementById('updateArea').innerHTML;
    document.getElementById('updateArea').innerHTML=curmsg+"<p> The current
     Requestst state is "+ xhr.readyState + " and the status is "+ 
     xhr.status + " . </p>"

    }

在firefox上输出

 The current Request state is 1 and the status is 0 .

The current Request state is 1 and the status is 0 .

The current Request state is 2 and the status is 0 .

The current Request state is 3 and the status is 0 .

The current Request state is 4 and the status is 0 .

Answer 1

尝试将浏览器升级到最新版本，然后移除()：

if(XMLHttpRequest)

在ajax请求中获取0状态

1 个答案: