mywaiting/XDRequest.js

## XDRequest.js
/**
	@Description: 发送跨域XMLHTTPRequest到Server，Server必须回应HTTP头部 Access-Control-Allow-Origin
	@Support: IE8+, Firefox 3.5+, Safari 4+, Opera 9+, Chrome

        @Refer:
            http://www.denisdeng.com/?p=1024
            http://blog.csdn.net/doraeimo/article/details/7329779
*/
function createXDPostRequest(method, url, payload, success, error) {
	try {
		if (window.XDomainRequest) {
			var xdr = new XDomainRequest();
			if (!xdr) {
				throw (0);
			}
			xdr.onerror = error;
			xdr.ontimeout = function() {};
			xdr.onload = function() {
				success(xdr.responseText);
			}
			xdr.open(method, url);
			xdr.send(payload);
		} else if (window.XMLHttpRequest) {
			var xhr = new XMLHttpRequest();
			xhr.open(method, url, true);
			xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
			xhr.onreadystatechange = function() {
				try {
					if (xhr.readyState != 4) return;
					if (xhr.status != 200) throw (0);
					success(xhr.responseText);
				} catch (e) {
					error();
				}
			}
			xhr.send(payload);
		} else {
			error();
		}
	} catch (e) {
		error();
	}
}

function createIframePostRequest(method, url, payload, options) {
	// Default
	options.iframeId = options.iframeId || "XDIframeForPostRequest";
	options.iframeOnload = options.iframeOnload || function(){};
	// Create Iframe
	var ifr = document.createElement("iframe");
	ifr.setAttribute("id", options.iframeId);
	ifr.setAttribute("name", options.iframeId);
	ifr.setAttribute("allowtransparency", "true");
	ifr.setAttribute("style", "border: 0; width: 0; height: 0; display: noen;");
	ifr.setAttribute("onload", options.iframeOnload);
	document.body.appendChild(ifr);
	// Get iframe's Window's Document
	var ifwin = window.frames[options.iframeId];
	var ifdoc = ifwin.contentDocument || ifwin.contentWindow.document;
	// Create Form
	var strings = '<html>';
	strings += '<body>';
	strings += '<form action="'+ url +'" method="'+ method +'" id="iframeformforpoat">';
	strings += '<input type="hidden" name="payload" id="payload" value=""';
	strings += '</form>';
	strings += '<script>';
	strings += 'var e=encodeURIComponent,w=window,d=document,f=d.getElementById("iframeformforpoat");';
	strings += 'd.getElementById("payload").value=decodeURIComponent(' + payload + ')';
	strings += 'd.getElementById("iframeformforpoat").submit();';
	ifdoc.write(strings);
}

/**
	@Description: 整合iframe和XMLHttpRequest的方法，iframe提交后成功与否这里不做处理
	@Support: IE6+, Firefox, Safari, Opera, Chrome
	@Notice: 在中国大陆的某些IE6内核的浏览器可能会有安全策略阻止插iframe，导致整个请求失败，这里不做处理
*/
function XDRequest(method, url, payload) {

}
	/**
	@Description: 发送跨域XMLHTTPRequest到Server，Server必须回应HTTP头部 Access-Control-Allow-Origin
	@Support: IE8+, Firefox 3.5+, Safari 4+, Opera 9+, Chrome

	@Refer:
	http://www.denisdeng.com/?p=1024
	http://blog.csdn.net/doraeimo/article/details/7329779
	*/
	function createXDPostRequest(method, url, payload, success, error) {
	try {
	if (window.XDomainRequest) {
	var xdr = new XDomainRequest();
	if (!xdr) {
	throw (0);
	}
	xdr.onerror = error;
	xdr.ontimeout = function() {};
	xdr.onload = function() {
	success(xdr.responseText);
	}
	xdr.open(method, url);
	xdr.send(payload);
	} else if (window.XMLHttpRequest) {
	var xhr = new XMLHttpRequest();
	xhr.open(method, url, true);
	xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
	xhr.onreadystatechange = function() {
	try {
	if (xhr.readyState != 4) return;
	if (xhr.status != 200) throw (0);
	success(xhr.responseText);
	} catch (e) {
	error();
	}
	}
	xhr.send(payload);
	} else {
	error();
	}
	} catch (e) {
	error();
	}
	}

	function createIframePostRequest(method, url, payload, options) {
	// Default
	options.iframeId = options.iframeId \|\| "XDIframeForPostRequest";
	options.iframeOnload = options.iframeOnload \|\| function(){};
	// Create Iframe
	var ifr = document.createElement("iframe");
	ifr.setAttribute("id", options.iframeId);
	ifr.setAttribute("name", options.iframeId);
	ifr.setAttribute("allowtransparency", "true");
	ifr.setAttribute("style", "border: 0; width: 0; height: 0; display: noen;");
	ifr.setAttribute("onload", options.iframeOnload);
	document.body.appendChild(ifr);
	// Get iframe's Window's Document
	var ifwin = window.frames[options.iframeId];
	var ifdoc = ifwin.contentDocument \|\| ifwin.contentWindow.document;
	// Create Form
	var strings = '<html>';
	strings += '<body>';
	strings += '<form action="'+ url +'" method="'+ method +'" id="iframeformforpoat">';
	strings += '<input type="hidden" name="payload" id="payload" value=""';
	strings += '</form>';
	strings += '<script>';
	strings += 'var e=encodeURIComponent,w=window,d=document,f=d.getElementById("iframeformforpoat");';
	strings += 'd.getElementById("payload").value=decodeURIComponent(' + payload + ')';
	strings += 'd.getElementById("iframeformforpoat").submit();';
	ifdoc.write(strings);
	}

	/**
	@Description: 整合iframe和XMLHttpRequest的方法，iframe提交后成功与否这里不做处理
	@Support: IE6+, Firefox, Safari, Opera, Chrome
	@Notice: 在中国大陆的某些IE6内核的浏览器可能会有安全策略阻止插iframe，导致整个请求失败，这里不做处理
	*/
	function XDRequest(method, url, payload) {

	}