xhr.open("GET", window.location.pathname + window.location.search, true)
xhr.send()
xhr.onreadystatechange = function() {
if(this.readyState == this.HEADERS_RECEIVED) {
console.log(xhr.getAllResponseHeaders())
}
}
这样就行了，可以玩玩看
如果要查找单个可以用getResponseHeader
// ajax 对象function ajaxObject() {
var xmlHttp
try {
// Firefox, Opera 8.0+, Safari
xmlHttp = new XMLHttpRequest()
}
catch (e) {
// Internet Explorer
try {
xmlHttp = new ActiveXObject("Msxml2.XMLHTTP")
} catch (e) {
try {
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP")
} catch (e) {
alert("您的浏览器不支持AJAX！")
return false
}
}
}
return xmlHttp
}
// ajax post请求：
function ajaxPost ( url , data , fnSucceed , fnFail , fnLoading ) {
var ajax = ajaxObject()
ajax.open( "post" , url , true )
ajax.setRequestHeader( "Content-Type" , "application/x-www-form-urlencoded" )
ajax.onreadystatechange = function () {
if( ajax.readyState == 4 ) {
if( ajax.status == 200 ) {
fnSucceed( ajax.responseText )
}
else {
fnFail( "HTTP请求错误！错误码："+ajax.status )
}
}
else {
fnLoading()
}
}
ajax.send( data )
}
