Javascript Scripted HTTP MCQ

However, JavaScript code can be used to script HTTP.
When a script sets the location property of a window object or calls the submit() method of a form object, HTTP requests are initiated.
The location object is a component of the window object and can be accessed via the window. Location is a property.

When a script sets the location property of a window object or calls the submit() method of a form object, HTTP requests are launched.
The browser displays a new page in both cases.

AJAX is an abbreviation for Asynchronous JavaScript And XML.
An Ajax application's distinguishing feature is that it uses scripted HTTP to initiate data exchange with a web server without causing pages to reload.

Comet is the inverse of Ajax in that the web server initiates communication, sending messages to the client asynchronously.
Comet has the significant advantage of always having a communication link open to the server.

Comet is a web application model in which a request is sent to the server and kept alive for an extended period of time until a time-out or a server event occurs.
Comet is also known as "Server Push", "Ajax Push", and "HTTP Streaming".

The src property is present in both img and script and can be used to initiate an HTTP GET request.
The src property sets or returns the value of an image's src attribute.
The required src attribute specifies an image's URL.

XMLHttpRequest is an object as well as a class.
To obtain data from a web server, use the XMLHttpRequest object.

An HTTP request is made up of four parts:
the URL being requested an optional set of request headers, which may include authentication information an optional request body

A server's HTTP response consists of three parts:
a numeric and textual status code indicating the request's success or failure a set of response headers the body of the response

request.open("GET","data.csv"); initiates an HTTP GET request for the contents of the specified URL.
The open() and send() methods of the XMLHttpRequest object are used to send a request to a server.

These characteristics are central to jQuery's power and utility:
An expressive syntax (CSS selectors) for referring to document elements
A quick way to find the set of document elements that match a CSS selector.
A useful collection of methods for manipulating specific elements.
Effective functional programming techniques for working with groups of elements rather than one at a time.
A concise idiom (method chaining) for expressing operation sequences.

The jQuery library includes a single global function known as jQuery ().
Because this function is so commonly used, the library defines the global symbol $ as a shortcut for it.
The $ sign is simply an alias for jQuery(), which is then an alias for a function that is used as a selector element.

jQuery() is a factory function, not a function Object() { [native code] }:
it returns a newly created object but does not use the new keyword.
Many methods for operating on the sets of elements represented by jQuery objects are defined.

The css() method sets or returns one or more style properties for the elements that have been selected.
The css() method operates on the jQuery object returned by $() and returns it, allowing the show() method to be called next in a short "method chain."

The min denotes the library's minimal version, with unnecessary comments and whitespace removed and internal identifiers replaced with shorter ones.
Minfile's file size is smaller than the original file, making it easier to load.

$() is simply a jquery alias function ().
The most important function in the jQuery library is jQuery() (also known as $()).
It is, however, heavily overloaded, with four different ways to invoke it.

jQuery. jQuery's utility function is noConflict().
The noConflict() method frees the $ shortcut identifier, allowing other scripts to use it.

For parsing JSON text, use jQuery.parseJSON().
The function transforms json into a javascript object.

On the client side, the code used to generate graphics is typically much smaller than the images themselves, resulting in significant bandwidth savings.

The term "dynamic graphics for data" refers to the use of a computer to simulate motion or movement.
It can also be viewed as a series of interconnected plots linked by time.
Dynamically generating graphics from real-time data consumes a significant amount of CPU cycles.