function,over

 module start。

arguments passing. scope of variables. 

generator, list comprehensions. map(), for and while loop.

 

 

Strophe = { /** Constants: XMPP Namespace Constants * Common namespace constants from the XMPP RFCs and XEPs. * * NS.HTTPBIND - HTTP BIND namespace from XEP 124. * NS.BOSH - BOSH namespace from XEP 206. * NS.CLIENT - Main XMPP client namespace. * NS.AUTH - Legacy authentication namespace. * NS.ROSTER - Roster operations namespace. * NS.PROFILE - Profile namespace. * NS.DISCO_INFO - Service discovery info namespace from XEP 30. * NS.DISCO_ITEMS - Service discovery items namespace from XEP 30. * NS.MUC - Multi-User Chat namespace from XEP 45. * NS.SASL - XMPP SASL namespace from RFC 3920. * NS.STREAM - XMPP Streams namespace from RFC 3920. * NS.BIND - XMPP Binding namespace from RFC 3920. * NS.SESSION - XMPP Session namespace from RFC 3920. */ NS: { HTTPBIND: "http://jabber.org/protocol/httpbind", BOSH: "urn:xmpp:xbosh", CLIENT: "jabber:client", AUTH: "jabber:iq:auth", ROSTER: "jabber:iq:roster", PROFILE: "jabber:iq:profile", DISCO_INFO: "http://jabber.org/protocol/disco#info", DISCO_ITEMS: "http://jabber.org/protocol/disco#items", MUC: "http://jabber.org/protocol/muc", SASL: "urn:ietf:params:xml:ns:xmpp-sasl", STREAM: "http://etherx.jabber.org/streams", BIND: "urn:ietf:params:xml:ns:xmpp-bind", SESSION: "urn:ietf:params:xml:ns:xmpp-session", VERSION: "jabber:iq:version" }, /** Constants: Connection Status Constants * Connection status constants for use by the connection handler * callback. * * Status.ERROR - An error has occurred * Status.CONNECTING - The connection is currently being made * Status.CONNFAIL - The connection attempt failed * Status.AUTHENTICATING - The connection is authenticating * Status.AUTHFAIL - The authentication attempt failed * Status.CONNECTED - The connection has succeeded * Status.DISCONNECTED - The connection has been terminated * Status.DISCONNECTING - The connection is currently being terminated */ Status: { ERROR: 0, CONNECTING: 1, CONNFAIL: 2, AUTHENTICATING: 3, AUTHFAIL: 4, CONNECTED: 5, DISCONNECTED: 6, DISCONNECTING: 7 }, /** Constants: Log Level Constants * Logging level indicators. * * LogLevel.DEBUG - Debug output * LogLevel.INFO - Informational output * LogLevel.WARN - Warnings * LogLevel.ERROR - Errors * LogLevel.FATAL - Fatal errors */ LogLevel: { DEBUG: 0, INFO: 1, WARN: 2, ERROR: 3, FATAL: 4 }, /** PrivateConstants: DOM Element Type Constants * DOM element types. * * ElementType.NORMAL - Normal element. * ElementType.TEXT - Text data element. */ ElementType: { NORMAL: 1, TEXT: 3 }, /** PrivateConstants: Timeout Values * Timeout values for error states. These values are in seconds. * These should not be changed unless you know exactly what you are * doing. * * TIMEOUT - Time to wait for a request to return. This defaults to * 70 seconds. * SECONDARY_TIMEOUT - Time to wait for immediate request return. This * defaults to 7 seconds. */ TIMEOUT: 70, SECONDARY_TIMEOUT: 7, /** Function: forEachChild * Map a function over some or all child elements of a given element. * * This is a small convenience function for mapping a function over * some or all of the children of an element. If elemName is null, all * children will be passed to the function, otherwise only children * whose tag names match elemName will be passed. * * Parameters: * (XMLElement) elem - The element to operate on. * (String) elemName - The child element tag name filter. * (Function) func - The function to apply to each child. This * function should take a single argument, a DOM element. */ forEachChild: function (elem, elemName, func) { var i, childNode; for (i = 0; i < elem.childNodes.length; i++) { childNode = elem.childNodes[i]; if (childNode.nodeType == Strophe.ElementType.NORMAL && (!elemName || this.isTagEqual(childNode, elemName))) { func(childNode); } } }, /** Function: isTagEqual * Compare an element's tag name with a string. * * This function is case insensitive. * * Parameters: * (XMLElement) el - A DOM element. * (String) name - The element name. * * Returns: * true if the element's tag name matches _el_, and false * otherwise. */ isTagEqual: function (el, name) { return el.tagName.toLowerCase() == name.toLowerCase(); }, /** Function: xmlElement * Create an XML DOM element. * * This function creates an XML DOM element correctly across all * implementations. Specifically the Microsoft implementation of * document.createElement makes DOM elements with 43+ default attributes * unless elements are created with the ActiveX object Microsoft.XMLDOM. * * Most DOMs force element names to lowercase, so we use the * _realname attribute on the created element to store the case * sensitive name. This is required to generate proper XML for * things like vCard avatars (XEP 153). This attribute is stripped * out before being sent over the wire or serialized, but you may * notice it during debugging. * * Parameters: * (String) name - The name for the element. * (Array) attrs - An optional array of key/value pairs to use as * element attributes in the following format [['key1', 'value1'], * ['key2', 'value2']] * (String) text - The text child data for the element. * * Returns: * A new XML DOM element. */ xmlElement: function (name) { // FIXME: this should also support attrs argument in object notation if (!name) { return null; } var node = null; if (window.ActiveXObject) { node = new ActiveXObject("Microsoft.XMLDOM").createElement(name); } else { node = document.createElement(name); } // use node._realname to store the case-sensitive version of the tag // name, since some browsers will force tagnames to all lowercase. // this is needed for the <vCard/> tag in XMPP specifically. if (node.tagName != name) node.setAttribute("_realname", name); // FIXME: this should throw errors if args are the wrong type or // there are more than two optional args var a, i; for (a = 1; a < arguments.length; a++) { if (!arguments[a]) { continue; } if (typeof(arguments[a]) == "string" || typeof(arguments[a]) == "number") { node.appendChild(Strophe.xmlTextNode(arguments[a])); } else if (typeof(arguments[a]) == "object" && typeof(arguments[a]['sort']) == "function") { for (i = 0; i < arguments[a].length; i++) { if (typeof(arguments[a][i]) == "object" && typeof(arguments[a][i]['sort']) == "function") { node.setAttribute(arguments[a][i][0], arguments[a][i][1]); } } } } return node; },
08-08
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