jQuery DOM Element Method - index() Method

jQuery DOM Element Method Reference Manual

Example

Get the name and value of the first p element:

$("li").click(function() {
  alert($(this).index());
});

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Definition and Usage

The index() method returns the index position of the specified element relative to other specified elements.

These elements can be specified by jQuery selector or DOM element.

Note:If the element is not found, index() will return -1.

The index of the first matching element, relative to the sibling element

Get the index position of the first matching element relative to its sibling elements.

Syntax

$(selector).index()

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The index of the element, relative to the selector

Get the index position of the element relative to the selector.

The element can be specified by DOM element or jQuery selector.

Syntax

$(selector).index(element)

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Parameter Description
element Optional. Specifies the element to be obtained at the index position. It can be a DOM element or a jQuery selector.

jQuery DOM Element Method Reference Manual