ajax.js

ajax基础操作实例,无刷添加删除等..

function openRequest(method, url, async) {
    var request = null;
    if (window.ActiveXObject)
        request = new ActiveXObject("Microsoft.XMLHTTP");
    else if (window.XMLHttpRequest)
        request = new XMLHttpRequest();
    if (request)
        request.open(method, url, async);
    return request;
}

function sendRequest(request, body) {
    if (body)
        request.setRequestHeader("Content-Type",
            "application/x-www-form-urlencoded");
    request.send(body);
}

function closeRequest(request) {
    request.onreadystatechange = function() { };
    request.abort();
    delete request;
}

function httpError(request) {
    alert("Http Error: " + request.status);
}