Return the number of elements in the jQuery object. The .size() method is deprecated as of jQuery 1.8. Use the .length property instead. The .size() method is functionally equivalent to the .length property; however, the .length property is preferred because it does not have the overhead of a function call. Given a simple unordered list on the page: <ul> <li>foo</li> <li>bar</li> </ul> Both .size() and .length i

Display the matched elements. With no parameters, the .show() method is the simplest way to display an element: $( ".target" ).show(); The matched elements will be revealed immediately, with no animation. This is roughly equivalent to calling .css( "display", "block"), except that the display property is restored to whatever it was initially. If an element has a display value of inline, then is hidden and shown, it will once again be displayed inline

Bind an event handler to the "submit" JavaScript event, or trigger that event on an element. This method is a shortcut for .on( "submit", handler ) in the first variation, and .trigger( "submit" ) in the third. The submit event is sent to an element when the user is attempting to submit a form. It can only be attached to <form> elements. Forms can be submitted either by clicking an explicit <input type="submit">, <input type="image">

Encode a set of form elements as an array of names and values. The .serializeArray() method creates a JavaScript array of objects, ready to be encoded as a JSON string. It operates on a jQuery collection of forms and/or form controls. The controls can be of several types: <form> <div><input type="text" name="a" value="1" id="a"></div> <div><input type="text" name="b" value="2" id="b"></div> <div>&l

Selects all elements that are selected. The :selected selector works for <option> elements. It does not work for checkboxes or radio inputs; use :checked for them. Because :selected is a jQuery extension and not part of the CSS specification, queries using :selected cannot take advantage of the performance boost provided by the native DOM querySelectorAll() method. To achieve the best performance when using :selected to select elements, first s

Get the siblings of each element in the set of matched elements, optionally filtered by a selector. Given a jQuery object that represents a set of DOM elements, the .siblings() method allows us to search through the siblings of these elements in the DOM tree and construct a new jQuery object from the matching elements. The method optionally accepts a selector expression of the same type that we can pass to the $() function. If the selector is supplied

A selector representing selector passed to jQuery(), if any, when creating the original set. The .selector property was deprecated in jQuery 1.7 and is only maintained to the extent needed for supporting .live() in the jQuery Migrate plugin. It may be removed without notice in a future version. The property was never a reliable indicator of the selector that could be used to obtain the set of elements currently contained in the jQuery set where it was

Display the matched elements with a sliding motion. The .slideDown() method animates the height of the matched elements. This causes lower parts of the page to slide down, making way for the revealed items. Durations are given in milliseconds; higher values indicate slower animations, not faster ones. The strings 'fast' and 'slow' can be supplied to indicate durations of 200 and 600 milliseconds, respectively. If any other string is supplied, or if th

Bind an event handler to the "select" JavaScript event, or trigger that event on an element. This method is a shortcut for .on( "select", handler ) in the first two variations, and .trigger( "select" ) in the third. The select event is sent to an element when the user makes a text selection inside it. This event is limited to <input type="text"> fields and <textarea> boxes. For example, consider the HTML: <form> <input id="targe

Get the current horizontal position of the scroll bar for the first element in the set of matched elements. The horizontal scroll position is the same as the number of pixels that are hidden from view to the left of the scrollable area. If the scroll bar is at the very left, or if the element is not scrollable, this number will be 0. Note:.scrollLeft(), when called directly or animated as a property using .animate(), will not work if the element it i