/*! * Reqwest! A general purpose XHR connection manager * (c) Dustin Diaz 2011 * https://github.com/ded/reqwest * license MIT */ !function (name, definition) { if (typeof module != 'undefined') module.exports = definition() else if (typeof define == 'function' && define.amd) define(name, definition) else this[name] = definition() }('reqwest', function () { var context = this , win = window , doc = document , old = context.reqwest , twoHundo = /^20\d$/ , byTag = 'getElementsByTagName' , readyState = 'readyState' , contentType = 'Content-Type' , requestedWith = 'X-Requested-With' , head = doc[byTag]('head')[0] , uniqid = 0 , lastValue // data stored by the most recent JSONP callback , xmlHttpRequest = 'XMLHttpRequest' , isArray = typeof Array.isArray == 'function' ? Array.isArray : function (a) { return a instanceof Array } , defaultHeaders = { contentType: 'application/x-www-form-urlencoded' , accept: { '*': 'text/javascript, text/html, application/xml, text/xml, */*' , xml: 'application/xml, text/xml' , html: 'text/html' , text: 'text/plain' , json: 'application/json, text/javascript' , js: 'application/javascript, text/javascript' } , requestedWith: xmlHttpRequest } , xhr = win[xmlHttpRequest] ? function () { return new XMLHttpRequest() } : function () { return new ActiveXObject('Microsoft.XMLHTTP') } function handleReadyState(o, success, error) { return function () { if (o && o[readyState] == 4) { if (twoHundo.test(o.status)) { success(o) } else { error(o) } } } } function setHeaders(http, o) { var headers = o.headers || {}, h headers.Accept = headers.Accept || defaultHeaders.accept[o.type] || defaultHeaders.accept['*'] // breaks cross-origin requests with legacy browsers if (!o.crossOrigin && !headers[requestedWith]) headers[requestedWith] = defaultHeaders.requestedWith if (!headers[contentType]) headers[contentType] = o.contentType || defaultHeaders.contentType for (h in headers) { headers.hasOwnProperty(h) && http.setRequestHeader(h, headers[h]) } } function generalCallback(data) { lastValue = data } function urlappend(url, s) { return url + (/\?/.test(url) ? '&' : '?') + s } function handleJsonp(o, fn, err, url) { var reqId = uniqid++ , cbkey = o.jsonpCallback || 'callback' // the 'callback' key , cbval = o.jsonpCallbackName || ('reqwest_' + reqId) // the 'callback' value , cbreg = new RegExp('((^|\\?|&)' + cbkey + ')=([^&]+)') , match = url.match(cbreg) , script = doc.createElement('script') , loaded = 0 if (match) { if (match[3] === '?') { url = url.replace(cbreg, '$1=' + cbval) // wildcard callback func name } else { cbval = match[3] // provided callback func name } } else { url = urlappend(url, cbkey + '=' + cbval) // no callback details, add 'em } win[cbval] = generalCallback script.type = 'text/javascript' script.src = url script.async = true if (typeof script.onreadystatechange !== 'undefined') { // need this for IE due to out-of-order onreadystatechange(), binding script // execution to an event listener gives us control over when the script // is executed. See http://jaubourg.net/2010/07/loading-script-as-onclick-handler-of.html script.event = 'onclick' script.htmlFor = script.id = '_reqwest_' + reqId } script.onload = script.onreadystatechange = function () { if ((script[readyState] && script[readyState] !== 'complete' && script[readyState] !== 'loaded') || loaded) { return false } script.onload = script.onreadystatechange = null script.onclick && script.onclick() // Call the user callback with the last value stored and clean up values and scripts. o.success && o.success(lastValue) lastValue = undefined head.removeChild(script) loaded = 1 } // Add the script to the DOM head head.appendChild(script) } function getRequest(o, fn, err) { var method = (o.method || 'GET').toUpperCase() , url = typeof o === 'string' ? o : o.url // convert non-string objects to query-string form unless o.processData is false , data = (o.processData !== false && o.data && typeof o.data !== 'string') ? reqwest.toQueryString(o.data) : (o.data || null) , http // if we're working on a GET request and we have data then we should append // query string to end of URL and not post data if ((o.type == 'jsonp' || method == 'GET') && data) { url = urlappend(url, data) data = null } if (o.type == 'jsonp') return handleJsonp(o, fn, err, url) http = xhr() http.open(method, url, true) setHeaders(http, o) http.onreadystatechange = handleReadyState(http, fn, err) o.before && o.before(http) http.send(data) return http } function Reqwest(o, fn) { this.o = o this.fn = fn init.apply(this, arguments) } function setType(url) { var m = url.match(/\.(json|jsonp|html|xml)(\?|$)/) return m ? m[1] : 'js' } function init(o, fn) { this.url = typeof o == 'string' ? o : o.url this.timeout = null var type = o.type || setType(this.url) , self = this fn = fn || function () {} if (o.timeout) { this.timeout = setTimeout(function () { self.abort() }, o.timeout) } function complete(resp) { o.timeout && clearTimeout(self.timeout) self.timeout = null o.complete && o.complete(resp) } function success(resp) { var r = resp.responseText if (r) { switch (type) { case 'json': try { resp = win.JSON ? win.JSON.parse(r) : eval('(' + r + ')') } catch (err) { return error(resp, 'Could not parse JSON in response', err) } break; case 'js': resp = eval(r) break; case 'html': resp = r break; } } fn(resp) o.success && o.success(resp) complete(resp) } function error(resp, msg, t) { o.error && o.error(resp, msg, t) complete(resp) } this.request = getRequest(o, success, error) } Reqwest.prototype = { abort: function () { this.request.abort() } , retry: function () { init.call(this, this.o, this.fn) } } function reqwest(o, fn) { return new Reqwest(o, fn) } // normalize newline variants according to spec -> CRLF function normalize(s) { return s ? s.replace(/\r?\n/g, '\r\n') : '' } function serial(el, cb) { var n = el.name , t = el.tagName.toLowerCase() , optCb = function(o) { // IE gives value="" even where there is no value attribute // 'specified' ref: http://www.w3.org/TR/DOM-Level-3-Core/core.html#ID-862529273 if (o && !o.disabled) cb(n, normalize(o.attributes.value && o.attributes.value.specified ? o.value : o.text)) } // don't serialize elements that are disabled or without a name if (el.disabled || !n) return; switch (t) { case 'input': if (!/reset|button|image|file/i.test(el.type)) { var ch = /checkbox/i.test(el.type) , ra = /radio/i.test(el.type) , val = el.value; // WebKit gives us "" instead of "on" if a checkbox has no value, so correct it here (!(ch || ra) || el.checked) && cb(n, normalize(ch && val === '' ? 'on' : val)) } break; case 'textarea': cb(n, normalize(el.value)) break; case 'select': if (el.type.toLowerCase() === 'select-one') { optCb(el.selectedIndex >= 0 ? el.options[el.selectedIndex] : null) } else { for (var i = 0; el.length && i < el.length; i++) { el.options[i].selected && optCb(el.options[i]) } } break; } } // collect up all form elements found from the passed argument elements all // the way down to child elements; pass a '