.data() in jq code example

Example 1: jquery get data attribute

<a data-id="123">link</a>


var id = $(this).data("id"); // Will set id to 123

Example 2: jquery data attribute

data attribute in jquery 

For setting attribute data to the element
Html
<p id="assign">Assigning data attribute</p>
jquery
$("#assign").data("title","firstparagraph");

Output:
<p id="assign" data-title="firstparagraph">Assigning data attribute</p>

For getting attribute data from the element
Html
<p id="assign" data-title="firstparagraph">Assigning data attribute</p>
jquery
console.log($("#assign").data("title"));
console.log($("#assign").data());

Output:
firstparagraph
{ title: firstparagraph }