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Immediately invoked function expressions may be written in a number of different ways. [3] A common convention is to enclose the function expression – and optionally its invocation operator – with the grouping operator, [4] in parentheses, to tell the parser explicitly to expect an expression.
The first parameter contains the request the client should send to the server asynchronously. The second parameter contains the callback function that the client should invoke when the response arrives from the server. "(lambda (h) (alert h))" is an anonymous function that takes a single input parameter "(h)", which contains the server response ...
Event bubbling is a type of DOM event propagation [1] where the event first triggers on the innermost target element, and then successively triggers on the ancestors (parents) of the target element in the same nesting hierarchy till it reaches the outermost DOM element or document object [2] (Provided the handler is initialized).
Rest parameters are similar to Javascript's arguments object, which is an array-like object that contains all of the parameters (named and unnamed) in the current function call. Unlike arguments , however, rest parameters are true Array objects, so methods such as .slice() and .sort() can be used on them directly.
Several basic attributes types have been recognized, including: (1) required attributes needed by a particular element type for that element type to function correctly; (2) optional attributes used to modify the default functionality of an element type; (3) standard attributes supported by many element types; and (4) event attributes used to ...
Parameters appear in procedure definitions; arguments appear in procedure calls. In the function definition f(x) = x*x the variable x is a parameter; in the function call f(2) the value 2 is the argument of the function. Loosely, a parameter is a type, and an argument is an instance.
In the 'Name' field, enter a descriptive name for your bookmarklet to help you identify its function. In the 'URL' field, paste the JavaScript code provided for the bookmarklet. Ensure that it starts with javascript: followed by the code snippet. Save the Bookmark: Click 'Save' or 'Done' to add the bookmarklet to your bookmarks bar or folder.
To activate the Javascript, the wikipage must be loaded with a withJS= parameter. The Javascript code has been tested with the Firefox 10.0 browser so far. It makes some use of the jQuery library, which is commonly used in Wikipedia scripts. Data used during the input and upload process are stored in a Javascript object named window.fuw.