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タイムアウトXMLHttpRequest

次のスクリプトにタイムアウトを追加するにはどうすればよいですか？テキストを"Timed Out"として表示したい。

var bustcachevar = 1 //bust potential caching of external pages after initial request? (1=yes, 0=no)
var loadedobjects = ""
var rootdomain = "http://" + window.location.hostname
var bustcacheparameter = ""

function ajaxpage(url, containerid) {
    var page_request = false
    if (window.XMLHttpRequest) // if Mozilla, Safari etc
        page_request = new XMLHttpRequest()
    else if (window.ActiveXObject) { // if IE
        try {
            page_request = new ActiveXObject("Msxml2.XMLHTTP")
        } catch (e) {
            try {
                page_request = new ActiveXObject("Microsoft.XMLHTTP")
            } catch (e) {}
        }
    } else
        return false
    document.getElementById(containerid).innerHTML = '<img src="load.gif" border="0"><br><br><strong>Generating Link...</strong>'
    page_request.onreadystatechange = function () {
        loadpage(page_request, containerid)
    }
    if (bustcachevar) //if bust caching of external page
        bustcacheparameter = (url.indexOf("?") != -1) ? "&" + new Date().getTime() : "?" + new Date().getTime()
    page_request.open('GET', url + bustcacheparameter, true)
    page_request.send(null)
}


function loadpage(page_request, containerid) {
    if (page_request.readyState == 4 && (page_request.status == 200 || window.location.href.indexOf("http") == -1))
        document.getElementById(containerid).innerHTML = page_request.responseText
    else if (page_request.readyState == 4 && (page_request.status == 404 || window.location.href.indexOf("http") == -1))
        document.getElementById(containerid).innerHTML = '<strong>Unable to load link</strong><br>Please try again in a few moments'
}
timeoutxmlhttprequest
33
InvalidSyntax

たとえば、XMLHttpRequestオブジェクトのタイムアウトプロパティを使用します。

var xhr = new XMLHttpRequest();

xhr.onreadystatechange = function () {
    if (xhr.readyState == 4) {
        alert("ready state = 4");
    }
};

xhr.open("POST", "http://www.service.org/myService.svc/Method", true);
xhr.setRequestHeader("Content-type", "application/json; charset=utf-8");
xhr.timeout = 4000; // Set timeout to 4 seconds (4000 milliseconds)
xhr.ontimeout = function () { alert("Timed out!!!"); }
xhr.send(json);

上記のコードは私のために働く！

乾杯

85
André Pedroso