jquery add data- attribute code example

Example 1: jquery add attribute

$('#someid').attr('name', 'value');

Example 2: 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 3: jquery data attribute

/* html */
<a data-number="123">link</a>

/* js */
$(this).attr("data-number") // returns string "123"

$(this).data("number") // returns number 123 (jQuery >= 1.4.3 only)

Example 4: 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 5: jquery get data attribute

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


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

Example 6: jquery add attribute

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>jQuery Adding Attribute to HTML Element</title>
<script src="https://code.jquery.com/jquery-1.12.4.min.js"></script>
<script>
    $(document).ready(function(){
        $(".add-attr").click(function(){            
            $('input[type="checkbox"]').attr("checked", "checked");
        });
    });
</script> 
</head>
<body>
    <button type="button" class="add-attr">Select Checkbox</button>
    <input type="checkbox"> 
</body>
</html>

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