Jquery enables the user to select specifically the element that is to be effected. jquery allows the user to select in the following WAYS:

jquery element selectors: with the use of CSS selectors the users can select the elements of an HTML document.

For example:

$("p") will select all the <p> elements.
$("p.intro") will select all <p> elements with class="intro" defined in them.
$("p#demo") this will select all <p> elements with id="demo".

jquery attribute selectors: the xpath expressions are USED by jquery to select elements of an html document with defined attributes.

For example:

$("[href]") is used to select all elements which have an href attribute.
$("[href$='.jpg']") can select all elements with an href attribute which will end with ".jpg".

Jquery enables the user to select specifically the element that is to be effected. jquery allows the user to select in the following ways:

jquery element selectors: with the use of css selectors the users can select the elements of an html document.

For example:

$("p") will select all the <p> elements.
$("p.intro") will select all <p> elements with class="intro" defined in them.
$("p#demo") this will select all <p> elements with id="demo".

jquery attribute selectors: the xpath expressions are used by jquery to select elements of an html document with defined attributes.

For example:

$("[href]") is used to select all elements which have an href attribute.
$("[href$='.jpg']") can select all elements with an href attribute which will end with ".jpg".