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Writing Classes in Javascript
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Writing Classes in Javascript
http://www.microcyb.com/?m=c&c=333
Wrtting classes in Javascript doesn't give full functionality of an object oriented language, but it atleast gives data hiding and encapsulation which are very useful specially when javascript is not a strongly typed language. It is very useful in cases when you need to handle multiple objects , instead of having arrays for all kinds of variables and then managing those arrays in methods you can just write a class to handle one object and then make many instances of that class. This also gives the namespace resolution to the variables so that you can avoid using global variables and still use variables across procedures.
JavaScript > Tips and Tutorials > Development
Oct 12, 2006
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Wrtting classes in Javascript doesn't give full functionality of an object oriented language, but it atleast gives data hiding and encapsulation which are very useful specially when javascript is not a strongly typed language. It is very useful in cases when you need to handle multiple objects , instead of having arrays for all kinds of variables and then managing those arrays in methods you can just write a class to handle one object and then make many instances of that class. This also gives the namespace resolution to the variables so that you can avoid using global variables and still use variables across procedures.
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was introduced to make it easier for web pages to "process"; that is, rather than merely display static information, JavaScript could be used to perform calculations, output results to the page, and so on. Typically, this power is best employed when triggered by the user who is, after all, the primary agent in a Web page. Events, then, became an essential tool for linking the user to the page.
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Regular expressions are calculated the same way as other JavaScript expressions, that is to say with account of operations priority: the operations with higher priority are performed first. If the operations have equal priority, they are performed from left to right. In the following table the operations of regular expressions are listed in descending order of their priority. The operations located in one chain have equal priority.
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FileUpload represents an element that allows a user to specify a file to be uploaded or submitted along with the form. The FileUpload object is a Browser object and is used to access the above FileUpload element of a form. Thus, the FileUpload object allows the user to give any file as input. If a user wants to access the FileUpload object then he or she can using the indexing concept on the elements array. The user can make use of each element inside the form that is stored as an array element within the array named elements [].
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