var b = new ActiveXObject("Microsoft.XMLHTTP");
b.onreadystatechange = function(){
if(b.readyState == 4 && b.status == 200){var strResult = b.responseText;
}
}b.open("POST",url,true);
b.send(null);
b.onreadystatechange = function(){
if(b.readyState == 4 && b.status == 200){var strResult = b.responseText;
}
}b.open("POST",url,true);
b.send(null);
alert($Context);
}var b = new ActiveXObject("Microsoft.XMLHTTP");
b.onreadystatechange = function(){
if(b.readyState == 4 && b.status == 200){callBack(b.responseText);
}
}b.open("POST",url,true);
b.send(null);
提示:完成该操作所需的数据还不可使用
if(b.readyState == 4 && b.status == 200){
}里面的未执行
var t=document.getElementById('tmp').value;
alert('1');
b.onreadystatechange = function(){
alert('2');
if(b.readyState == 4 && b.status == 200){
alert('3');
var strResult = unescape(b.responseText);
}
}
b.open("POST","url",true);
b.send(null);
}
我设置此函数每三秒执行一次,
alert('1')在正常执行,而alert('2')alert('3')只在刷新时执行一次