The on () method in jQuery is used to attach event listeners to the HTML elements and child elements. Syntax: $(selector).on(event, function) Here, event is the event that will be attached to the selected element and function is the event handler that specifies what happens when the attached event is triggered.
jQuery always returns a set of elements. Sometimes, the set is empty. Sometimes, it contains only one element. The beauty of this is that you can write code to work the same way regardless of how many elements are matched: $("selector").each(function() { this.style.backgroundColor = "red"; }); Fun!
With the assumption that there's only one element: $("#grid_GridHeader")[0] $("#grid_GridHeader").get(0) $("#grid_GridHeader").get() are all equivalent, returning the single underlying element. From the jQuery source code, you can see that get(0), under the covers, essentially does the same thing as the [0] approach:
You can call the first method, which will return a new jQuery object containing only the first element in the original one. However, in your case, you might as well use the (equivalent) :first selector, like this: $("ul > li > a:first").click(function() { });
Description: Retrieve one of the elements matched by the jQuery object. version added: 1.0 .get ( index ) index. Type: Integer. A zero-based integer indicating which element to retrieve. The .get() method grants access to the DOM nodes underlying each jQuery object.
Use. $(event.target).next() to get the next sibling. You can also pass an expression to the next function. This will select the next sibling to match you selector: $(event.target).next("p") You can also use nextAll, which works the same way but returns all of the following sublings. See more here.
Categories: Traversing > Filtering. .first () Returns: jQuery. Description: Reduce the set of matched elements to the first in the set. version added: 1.4 .first () This method does not accept any arguments. Given a jQuery object that represents a set of DOM elements, the .first() method constructs a new jQuery object from the first element in
.one( events [, data ], handler ) Returns: jQuery Description: Attach a handler to an event for the elements. The handler is executed at most once per element per event type.
In order to get the best performance using :enabled, first select elements with a standard jQuery selector, then use .filter( ":enabled" ), or precede the pseudo-selector with a tag name or some other selector. link:input. Using the :input selector selects all <input>, <textarea>, <select>, and <button> elements:
jQuery.get () Categories: Ajax > Shorthand Methods. jQuery.get ( url [, data ] [, success ] [, dataType ] ) Returns: jqXHR. Description: Load data from the server using a HTTP GET request. version added: 1.0 jQuery.get ( url [, data ] [, success ] [, dataType ] ) url. Type: String.