jQuery Attribute selectors

The following variations are equally correct:

Value	Examples
Bare words	`$('a[rel=nofollow self]')`
Double quotes inside single quotes	`$('a[rel="nofollow self"]')`
Single quotes inside double quotes	`$("a[rel='nofollow self']")`
Escaped single quotes inside single quotes	`$('a[rel=\'nofollow self\']')`
Escaped double quotes inside double quotes	`$("a[rel=\"nofollow self\"]")`

The following summarizes the different kinds of attribute selectors.

Attribute Selector	Select
`elem[attr]`	elements that match attribute attr.
`elem[attr=val]`	elements that contain an attribute `attr` that match value `val`.
`elem[attr^=val]`	elements that contain attribute `attr` and that begin with value `val`.
`elem[attr\|=val]`	elements with attribute values that either begin with `val`, or are equal to `val`.
`elem[attr$=val]`	elements that contain attribute `attr` and that end with value `val`.
`elem[attr!=val]`	elements that don't contain an attribute `attr` with value `val`.
`elem[attr~=val]`	elements that contain an attribute attr with a value that contains the word `val`. Words are space delimited.
`elem[attr*=val]`	elements that have the specified attribute `attr` with a value containing the a given substring `val`.