jQuery miscellaneous methods
| method | describe |
|---|---|
| data() | Append data to selected elements, or get data from selected elements |
| each() | Execute the function for each matched element |
| get() | Get the DOM element specified by the selector |
| index() | Searches for a given element from matching elements |
| $.noConflict() | Release jQuery control of variable $ |
| $.param() | Creates a serialized representation of an array or object (can be used in URL query strings when making AJAX requests) |
| removeData() | Remove previously stored data |
| size() | Deprecated in version 1.8. Returns the number of DOM elements matched by the jQuery selector |
| toArray() | Retrieves all DOM elements contained in the jQuery collection as an array |
| pushStack() | Adds a collection of DOM elements to the jQuery stack |
| $.when() | Provides a way to execute callback functions for one or more objects |
jQuery Utilities
| method | describe |
|---|---|
| $.boxModel | Deprecated in version 1.8. Detects whether the browser renders the current page using the W3C's CSS box model |
| $.browser | Deprecated in version 1.9. Returns information about the browser the user is currently using |
| $.contains() | Determines whether another DOM element is a descendant of the specified DOM element |
| $.each() | Iterate over specified objects and arrays |
| $.extend() | Merge the contents of one or more objects into the target object |
| $.fn.extend() | Extends one or more instance properties and methods for jQuery |
| $.globalEval() | Execute a piece of JavaScript code globally |
| $.grep() | Filter and return array elements that satisfy the specified function |
| $.inArray() | Finds the specified value in the array and returns its index (or -1 if not found) |
| $.isArray() | Determine whether the specified parameter is an array |
| $.isEmptyObject() | Checks if the object is empty (contains no properties) |
| $.isFunction() | Determine whether the specified parameter is a function |
| $.isNumeric() | Determines whether the specified parameter is a numeric value |
| $.isPlainObject() | Determine whether the specified parameter is a pure object |
| $.isWindow() | Determine whether the specified parameter is a window |
| $.isXMLDoc() | Determine whether a DOM node is located in an XML document, or itself is an XML document |
| $.makeArray() | converts an array-like object to a true array object |
| $.map() | The specified function processes each element in the array (or each attribute of the object), and encapsulates the processing result as a new array to return |
| $.merge() | Merge the contents of two arrays into the first array |
| $.noop() | an empty function |
| $.now() | return current time |
| $.parseHTML() | Parses an HTML string into an array of corresponding DOM nodes |
| $.parseJSON() | Convert a JSON string conforming to the standard format to the corresponding JavaScript object |
| $.parseXML() | Parses a string into a corresponding XML document |
| $.trim() | Remove whitespace characters from both ends of a string |
| $.type() | Determining the type of a JavaScript built-in object |
| $.unique() | Deprecated in jQuery 3.0. Sort an array of DOM elements and remove duplicate elements |
| $.uniqueSort() | Sort an array of DOM elements and remove duplicate elements |
| $.data() | Access data on the specified element and return the set value |
| $.hasData() | Determine if an element has associated jQuery data |
| $.sub() | Creates a new copy of jQuery whose properties and methods can be modified without affecting the original jQuery object |
| $.speed | Create an object containing a set of properties to define custom animations |
| $.htmlPrefilter() | Modify and filter HTML strings via jQuery action methods |
| $.readyException() | Handle errors thrown synchronously by functions wrapped in jQuery() |
jQuery callback object
The new jQuery.Callbacks() function in jQuery 1.7 returns a multi-purpose object, which provides a powerful way to manage the callback list. It can add, delete, trigger, disable callback functions.
| method | describe |
|---|---|
| $.Callbacks() | A multi-purpose callback list object, used to manage the list of callback functions |
| callbacks.add() | Add a callback or a collection of callbacks to the callback list |
| callbacks.disable() | Disable callback functions in the callback list |
| callbacks.disabled() | Determine if the callback list has been disabled |
| callbacks.empty() | 从列表中清空所有的回调 |
| callbacks.fire() | 传入指定的参数调用所有的回调 |
| callbacks.fired() | 确定回调是否至少已经调用一次 |
| callbacks.firewith() | 给定的上下文和参数访问列表中的所有回调 |
| callbacks.has() | 判断回调列表中是否添加过某回调函数 |
| callbacks.lock() | 锁定当前状态的回调列表 |
| callbacks.locked() | 判断回调列表是否被锁定 |
| callbacks.remove() | 从回调列表中的删除一个回调或回调集合 |
jQuery 延迟对象
在jQuery 1.5中介绍了 Deferred 延迟对象，它是通过调用 jQuery.Deferred() 方法来创建的可链接的实用对象。它可注册多个回调函数到回调列表，调用回调列表并且传递异步或同步功能的成功或失败的状态。
延迟对象是可链接的，类似于一个 jQuery 对象可链接的方式，区别于它有自己的方法。在创建一个 Deferred 对象之后，您可以使用以下任何方法，直接链接到通过调用一个或多个的方法创建或保存的对象。
| 方法 | 描述 |
|---|---|
| $.Deferred() | 返回一个链式实用对象方法来注册多个回调 |
| deferred.always() | 当Deferred（延迟）对象被受理或被拒绝时，调用添加的处理程序 |
| deferred.done() | 当Deferred（延迟）对象被受理时，调用添加的处理程序 |
| deferred.fail() | 当Deferred（延迟）对象被拒绝时，调用添加的处理程序 |
| deferred.isRejected() | 从jQuery1.7开始已经过时，确定 Deferred 对象是否已被拒绝 |
| deferred.isResolved() | 从jQuery1.7开始已经过时，确定 Deferred 对象是否已被解决 |
| deferred.notify() | 给定一个参数，调用正在延迟对象上进行的回调函数( progressCallbacks ) |
| deferred.notifyWith() | Given the context and arguments, call the callback function ( progressCallbacks ) that is in progress on the deferred object |
| deferred.pipe() | Utility methods for filtering and/or chaining deferred objects |
| deferred.progress() | Add handler called when a Deferred object generates a progress notification |
| deferred.promise() | A Promise object that returns a Deferred |
| deferred.reject() | Rejects the Deferred (deferred) object and calls any failCallbacks callback function according to the given parameters |
| deferred.rejectWith() | Rejects the Deferred (deferred) object, and calls any failCallbacks callback functions according to the given context and args parameters |
| deferred.resolve() | Resolves the Deferred object and calls any doneCallbacks callback functions with the given parameters |
| deferred.resolveWith() | Resolves the Deferred object and calls any doneCallbacks callback functions with the given context and args parameters |
| deferred.state() | Determine the current state of a Deferred object |
| deferred.then() | Add handler called when Deferred object resolves, rejects or is still in progress |
| .promise() | Returns a Promise object to observe whether all actions of a certain type bound to the collection have been added to the queue |