Getting data-* attribute for onclick event for an html element

<a id="option1" data-id="10" data-option="21" href="#" onclick="goDoSomething(?,?);">
Click to do something
</a>

I want to get the data-id and data-option values inside the function goDoSomething(10, 21) I have tried to use this reference: this.data['id'] but it did not work.

How can I do this?

227518 次浏览
小开

Like this:

$(this).data('id');
$(this).data('option');

Working example: http://jsfiddle.net/zwHUc/

小开
最佳答案

You can achieve this $(identifier).data('id') using jquery, 

    <script type="text/javascript">


function goDoSomething(identifier){
alert("data-id:"+$(identifier).data('id')+", data-option:"+$(identifier).data('option'));
}


</script>


<a id="option1"
data-id="10"
data-option="21"
href="#"
onclick="goDoSomething(this);">
Click to do something
</a>

javascript : You can use getAttribute("attributename") if want to use javascript tag,

    <script type="text/javascript">


function goDoSomething(d){
alert(d.getAttribute("data-id"));
}


</script>


<a id="option1"
data-id="10"
data-option="21"
href="#"
onclick="goDoSomething(this);">
Click to do something
</a>

Or:

    <script type="text/javascript">


function goDoSomething(data_id, data_option){


alert("data-id:"+data_id+", data-option:"+data_option);
}


</script>


<a id="option1"
data-id="10"
data-option="21"
href="#"
onclick="goDoSomething(this.getAttribute('data-id'), this.getAttribute('data-option'));">
Click to do something
</a>
小开

here is an example 

 <a class="facultySelecter" data-faculty="ahs" href="#">Arts and Human Sciences</a></li>


$('.facultySelecter').click(function() {
var unhide = $(this).data("faculty");
});

this would set var unhide as ahs, so use .data("foo") to get the "foo" value of the data-* attribute you're looking to get

小开

User $() to get jQuery object from your link and data() to get your values

<a id="option1"
data-id="10"
data-option="21"
href="#"
onclick="goDoSomething($(this).data('id'),$(this).data('option'));">
Click to do something
</a>
小开

I simply use this jQuery trick:

$("a:focus").attr('data-id');

It gets the focused a element and gets the data-id attribute from it.

小开

Check if the data attribute is present, then do the stuff... 

$('body').on('click', '.CLICK_BUTTON_CLASS', function (e) {
if(e.target.getAttribute('data-title')) {
var careerTitle = $(this).attr('data-title');
if (careerTitle.length > 0) $('.careerFormTitle').text(careerTitle);
}
});
小开 
function get_attribute(){ alert( $(this).attr("data-id") ); }

Read more at https://www.developerscripts.com/how-get-value-of-data-attribute-in-jquery

小开

you can directly use anchor id or data-action attributes to trigger the event.

Html Code

<a id="option1" data-action="option1" data-id="10" data-option="21" href="javascript:void(0);" title="Click Here">Click Here</a>

jQuery Code:

$('a#option1').on('click', function(e) {
e.preventDefault();
console.log($(this).data('id') + '::' + $(this).data('option')) ;
});

OR

$('[data-action="option1"]').on('click', function(e) {
e.preventDefault();
console.log($(this).data('id') + '::' + $(this).data('option'));
});

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