Super Light AJAX plugin by IvanSkvortsov
此腳本不應該直接安裝，它是一個供其他腳本使用的函式庫。欲使用本函式庫，請在腳本 metadata 寫上： // @require https://update.greasyfork.org/scripts/32009/209858/Super%20Light%20AJAX%20plugin.js
// ==UserScript==
// @name Super Light AJAX plugin
// @description Super Light AJAX plugin by IvanSkvortsov
// @description:ru Супер упрощенная версия AJAX плагина от IvanSkvortsov
// @include *://*
// @author IvanSkvortsov
// @date 2017.08.05
// @version 1.0.5
// @grant none
// ==/UserScript==
(function(){
var lqueue = [], lrequestInProgress = false, lqueueCleaned = true;
var activeXs = ['Msxml3.XMLHTTP', 'Msxml2.XMLHTTP.6.0', 'Msxml2.XMLHTTP.3.0', 'Msxml2.XMLHTTP', 'Microsoft.XMLHTTP',];
var events = ['onabort', 'onerror', 'onload', 'onloadend', 'onloadstart', 'onprogress', 'onreadystatechange', 'ontimeout',];
function XHttpRequestLight(){
var request = lqueue[0], xhttp = null, i, key;
if(!( request && (lrequestInProgress === false || request.async === true) && lqueue.length > 0 ))
return;
// handle request:
request.method = request.method || 'GET';
if( request.method.toUpperCase() === 'GET' && request.data ){
request.url += '?' + request.data;
request.data = null;
}
request.async = typeof request.async === 'boolean' ? request.async : true;
// createXmlHttpRequest:
if( window.XMLHttpRequest )
xhttp = new XMLHttpRequest();
else if( window.ActiveXObject ){
for( i = 0; i < activeXs.length; ++i ){
try{xhttp = new ActiveXObject(activeXs[i]);}
catch(error){continue;}
break;
}
if( !xhttp ){
console.error("[XHttpRequestLight] can't create ActiveXObject");
return;
}
}else{
console.error("[XHttpRequestLight] can't create XmlHttpRequest object");
return;
}
xhttp.open( request.method, request.url, request.async );
lrequestInProgress = true;
lqueue.shift();
for( key in request.headers )
xhttp.setRequestHeader( key, request.headers[key] );
xhttp.url = request.url;
// handle XmlHttpRequest events
events.forEach(function(type){
if( request[type] ){
xhttp[type] = function(event){
xhttp.lengthComputable = event.lengthComputable || false;
xhttp.loaded = event.loaded || 0;
xhttp.total = event.total || 0;
request[type].call(xhttp, xhttp.responseText);
if( type === 'onerror' || type === 'onload' || (type === 'onreadystatechange' && xhttp.readyState == 4 && xhttp.status == 200 && !request.onload)){
lrequestInProgress = false;
request.delay = request.delay > 20 ? request.delay : 20;
setTimeout( XHttpRequestLight, request.delay );
}
};
}
});
xhttp.send( request.data || null);
}
function createNewRequest( url, settings )
{
var key, val, request = {};
for( key in settings )
{
val = settings[key];
if( Object.prototype.hasOwnProperty.call( settings, key ) && val )
request[key] = val;
}
request.url = url;
return request;
}
window.ISL = window.ISL || {};
// AJAX API
ISL.lajaxAddXHR = function(){
var request, url, settings;
switch(arguments.length){
case 0:
return;
case 1:
request = arguments[0];
if( request.length )
lqueue = lqueue.concat( request );
else
lqueue.push(request);
break;
case 2:
url = arguments[0];
settings = arguments[1];
if( url.length )
url.forEach(function(u){ lqueue.push(createNewRequest(u, settings));} );
else
lqueue.push(createNewRequest(url, settings));
break;
default:
console.error("[lajaxAddXHR] invalid number of arguments: " + arguments.length);
return;
}
lqueueCleaned = false;
};
ISL.lajax = function(){
ISL.lajaxAddXHR.apply(this, arguments);
XHttpRequestLight();
};
ISL.lajaxClean = function(){
lqueue.length = 0;
lrequestInProgress = false;
lqueueCleaned = true;
};
ISL.lajaxLength = function(){ return lqueue.length; };
})();