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AJAX 精辟的工具

var XmlHttpPool = {

m_MaxPoolLength : 10,

m_XmlHttpPool : [],

__requestObject : function() {

var xmlhttp = null;

var pool = this.m_XmlHttpPool;

for (var i = 0; i < pool.length; ++i) {

if (pool[i].readyState == 4 || pool[i].readyState == 0) {

xmlhttp = pool[i];

break;

}

if (xmlhttp == null) {

return this.__extendPool();

}

return xmlhttp;

__extendPool : function() {

if (this.m_XmlHttpPool.length < this.m_MaxPoolLength) {

var xmlhttp = null;

try {

xmlhttp = new ActiveXObject('MSXML2.XMLHTTP');

} catch(e) {

try {

xmlhttp = new ActiveXObject('Microsoft.XMLHTTP');

} catch(e2) {

}

if (xmlhttp) {

this.m_XmlHttpPool.push(xmlhttp);

}

return xmlhttp;

}

GetRemoteData : function(url, callback) {

this.__receiveRemoteData(url, callback, 'GET', null);

GetRemoteDataXML : function(url, callback) {

this.__receiveRemoteDataXML(url, callback, 'GET', null);

GetRemoteDataEx : function(url) {

return this.__receiveRemoteDataEx(url, 'GET', null);

GetRemoteDataExXML : function(url, callback) {

this.__receiveRemoteDataExXML(url, 'GET', null);

PostRemoteData : function(url, callback, data) {

this.__receiveRemoteData(url, callback, 'POST', data);

PostRemoteDataXML : function(url, callback, data) {

this.__receiveRemoteDataXML(url, callback, 'POST', data);

PostRemoteDataEx : function(url, data) {

return this.__receiveRemoteDataEx(url, 'POST', data);

PostRemoteDataExXML : function(url, data) {

return this.__receiveRemoteDataExXML(url, 'POST', data);

__receiveRemoteData : function(url, callback, httpmethod, data) {

var xmlhttp = this.__requestObject();

if (!xmlhttp) {

return null;

}

xmlhttp.open(httpmethod, url, true);

if (httpmethod == 'POST') {

xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded")

}

xmlhttp.onreadystatechange = function() {

if (xmlhttp.readyState == 4 || xmlhttp.readyState == 'complete') {

callback(xmlhttp.responseText);

}

};

xmlhttp.send(data);

__receiveRemoteDataEx : function(url, httpmethod, data) {

var xmlhttp = this.__requestObject();

if (!xmlhttp) {

return null;

}

xmlhttp.open(httpmethod, url, false);

if (httpmethod == 'POST') {

xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded")

}

xmlhttp.send(data);

if (xmlhttp.status == 200) {

return xmlhttp.responseText;

}

return '';

__receiveRemoteDataXML : function(url, callback, httpmethod, data) {

var xmlhttp = this.__requestObject();

if (!xmlhttp) {

return null;

}

xmlhttp.open(httpmethod, url, true);

if (httpmethod == 'POST') {

xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded")

}

xmlhttp.onreadystatechange = function() {

if (xmlhttp.readyState == 4 || xmlhttp.readyState == 'complete') {

callback(xmlhttp.responseXML);

}

};

xmlhttp.send(data);

__receiveRemoteDataExXML : function(url, httpmethod, data) {

var xmlhttp = this.__requestObject();

if (!xmlhttp) {

return null;

}

xmlhttp.open(httpmethod, url, false);

if (httpmethod == 'POST') {

xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded")

}

xmlhttp.send(data);

if (xmlhttp.status == 200) {

return xmlhttp.responseXML;

}

return '';

CancelAll : function() {

var extendPool = this.__extendPool;

this.__extendPool = function() {

return null;

}

for (var i = 0; i < this.m_XmlHttpPool.length; ++i) {

this.m_XmlHttpPool[i].abort();

}

this.__extendPool = extendPool;

}

};

posted on 2007-12-20 14:12 HUIKK 閱讀(246) 評(píng)論(0) 編輯收藏所屬分類: JavaScript

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