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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).
To prevent an event from bubbling, developers must call the stopPropagation() method of the event object. To prevent the default action of the event to be called, developers must call the preventDefault() method of the event object. The main difference from the traditional model is that multiple event handlers can be registered for the same event.
Comet is known by several other names, including Ajax Push, [4] [5] Reverse Ajax, [6] Two-way-web, [7] HTTP Streaming, [7] and HTTP server push [8] among others. [9] The term Comet is not an acronym, but was coined by Alex Russell in his 2006 blog post.
A Mutant is a special object which could have all properties (fields, methods, etc.), and may be converted to any type (or assigned to object of any type). The semantics of such conversion (or assignment) are pragmatically conditional. There is a special operator := called Mutantic or Generalized assignment. Its purpose is to assign values of ...
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Variables in standard JavaScript have no type attached, so any value (each value has a type) can be stored in any variable. Starting with ES6, the 6th version of the language, variables could be declared with var for function scoped variables, and let or const which are for block level variables.
HTTP/3 uses similar semantics compared to earlier revisions of the protocol, including the same request methods, status codes, and message fields, but encodes them and maintains session state differently. However, partially due to the protocol's adoption of QUIC, HTTP/3 has lower latency and loads more quickly in real-world usage when compared ...
In JavaScript, object creation is prototype-based instead: an object creating function can have a prototype property, and any object assigned to that property will be used as a prototype for the objects created with that function. The Prototype framework is not to be confused with this language feature.