ID

In this chapter you will learn:

What is the jQuery ID selector
Examples for ID selector

Syntax for ID selector

$('#myid') selects the unique element with an ID equal to myid.

Examples

$('#myid') selects the unique element with id="myid".
$('p#myid') selects a single paragraph with an ID of myid.
$("div#elementId") selects all divs with an ID of elementId.

<!DOCTYPE html> <!--from j a v a  2s  . c  o m-->
<html>
    <head>
        <script src="http://java2s.com/style/jquery-1.8.0.min.js">
        </script>
        <script>
            $(document).ready(function(){ 
                var wrappedElements = $("ul#myList"); 
                document.writeln(wrappedElements.length);
            });
        </script> 
    <body> 
        <div id="main">
            <ul id="myList"> 
                <li>foo</li> 
                <li>bar</li>
            </ul> 
        </div> 
    </body> 
</html>

Click to view the demo

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What you will learn in the next chapter:

Home » jQuery » jQuery Selector

Selector syntax

ID

Tag Name

Class Name

Descendant $('E F')

Child (E > F)

General sibling (E ~ F)

Multiple expressions (E, F, G)

Universal (*)

Filtering by Relationships

Numbered child (:nth-child(n/even/odd/expr))

First child (:first-child)

Last child (:last-child)

Only child (:only-child)

Not (:not(E))

Empty (:empty)

Attribute selectors

Attribute existence([attr])

Attribute equals ([foo=bar])

Attribute not equal ([foo!=bar])

Attribute begins with ([foo^=bar])

Attribute ends with ([foo$=bar])

Attribute contains ([foo*=bar])

Attribute contains word ([foo~=bar])

Attribute contains prefix ([foo|=bar])

Attribute exists $("[attributeName*='value']")

Form selector

Form input selector (:input)

Form text fields (input:text)

Form Password field (input:password)

Form Radio button (input:radio)

Form Checkbox (input:checkbox)

Form Submit button (input:submit)

Form Image button (input:image)

Form Reset button (input:reset)

Form button (input:button)

Form File upload (input:file)

Form Enabled form element (input:enabled)

Form Disabled form element (input:disabled)

Form Checked box (input:checked)

Form Selected option (input:selected)

Element at index (:eq(n))

Greater than (:gt(n))

Less than (:lt(n))

First (:first)

Last (:last)

Even element (:even)

Odd element (:odd)

parent (:parent)

Contains text (:contains(text))

Contains element (:has(E))

Visible (:visible)

Hidden (:hidden)

Header element (:header)

Currently animating (:animated)

$(this) selector

Custom User Selectors

Escape characters