set data-id in jquery code example

Example 1: jquery set data attribute value

//<div id="myElementID" data-myvalue="37"></div>
var a = $('#myElementID').data('myvalue'); //get myvalue
$('#myElementID').data('myvalue',38); //set myvalue

Example 2: set data attribute with a string jquery

alert($('#outer').html());   // alerts <div id="mydiv" data-myval="10"> </div>
var a = $('#mydiv').data('myval'); //getter
$('#mydiv').attr("data-myval","20"); //setter
alert($('#outer').html());   //alerts <div id="mydiv" data-myval="20"> </div>

Example 3: jquery get data attribute

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


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

Example 4: 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 }