Finally, the $(this) variable is the jQuery way of accessing the current encapsulating object, as in Java. Here that means stopping the web browser from following the link that the user clicked on.
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In this example, the code calls another function, preventDefault() on the event passed to stop the standard action on that event.
The event argument to this user-defined function is a default argument sent to functions which handle user actions like clicking a mouse button. The argument to the click function is another function that is to be called when the selected elements are clicked by the user. The click function is invoked for all such a elements in the document. That is, in this case, all elements in the HTML document that are tags. $("a") is the jQuery way of selecting all HTML a elements. The above code leverages many useful javascript and jQuery features. For example, here is some code that sets up a function to be called whenever the user clicks on a link: You can use it to call jQuery functions, access HTML document elements in order to read or write values, or modify style information via CSS for a range of document elements. The $ symbol is used to denote jQuery functionality. The trade-off is that having a local copy will load faster, but then requires you to manage the library files your self (e.g., downloading new versions).Ī few code snippets are given below, but the best way to learn about all the features of jQuery is to head to the jQuery website and look through the tutorials, references, and examples there. You can also link to the jQuery library directly on other websites as mentioned in the above tutorials. To get the link to the latest hosted jQuery, see the Google Hosted Libraries Developer's Guide.
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