There are two demonstrations and explanations: Always cache your jQuery selector returned objects in variables for reuse. I am using the querySelector method to make that happen.
Delegated events have the advantage that they can process events from descendant elements that are added to the document at a later time example Ajax. The Singleton Pattern The Singleton pattern is thus known because it restricts instantiation of a class to a single object. Instead, you call document.
The counter variable is actually fully shielded from our global scope so it acts just like a private variable would - its existence is limited to within the module's closure so that the only code able to access its scope are our two functions.
DO NOT use anonymous functions to attach events. Of course, you can include HTML tags in there too or some pre-programming. Other disadvantages include the inability to create automated unit tests for private members and additional complexity when bugs require hot fixes.
All fields should be found in this format: It makes sense to simply memorize these numeric code's for the more common nodes given that we are only dealing with 5 numeric codes.
The Module pattern is based in part on object literals and so it makes sense to refresh our knowledge of them first. One example of a CSS property that falls into this special category is float. The appendChild method will append a node s to the end of the child node s of the node the method is called on.
Secondly, it supports private data - so, in the Module pattern, public parts of our code are able to touch the private parts, however the outside world is unable to touch the class's private parts no laughing!
Names inside the object may be either strings or identifiers that are followed by a colon. With this pattern, only a public API is returned, keeping everything else within the closure private.
For new web-apps, if you do not have any plugin compatibility issue, it's highly recommended to use the latest jQuery version. Below I detail the values returned for nodeType and nodeName for the node objects discussed in this book. When using class selectors, don't use the element type in your selector.
cheri197.com works fine: innerHTML vs cheri197.com cheri197.com can replace the whole place so if you ever have a input or div onclick for example and it does cheri197.com ('Hello') it will do that exactly. basically overwrite the document. Please note these clinical waste wheelie bins are the typical type of wheelie bin used on site by hospitals, clinics, doctors surgeries, dentists, vets etc.
Girma, the difference is that you can’t run getElementById on a div.