Getting the class of the element that fired an event using JQuery

问题

is there anyway to get the class when click event is fired. My code as below, it only work for id but not class.

$(document).ready(function() {
  $("a").click(function(event) {
    alert(event.target.id + " and " + event.target.class);
  });
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<html>

<body>
  <a href="#" id="kana1" class="konbo">click me 1</a>
  <a href="#" id="kana2" class="kinta">click me 2</a>
</body>

</html>

jsfiddle code here

回答1:

Try:

$(document).ready(function() {
    $("a").click(function(event) {
       alert(event.target.id+" and "+$(event.target).attr('class'));
    });
});

回答2:

This will contain the full class (which may be multiple space separated classes, if the element has more than one class). In your code it will contain either "konbo" or "kinta":

event.target.className

You can use jQuery to check for classes by name:

$(event.target).hasClass('konbo');

and to add or remove them with addClass and removeClass.

回答3:

You will get all the class in below array

event.target.classList

回答4:

$(document).ready(function() {
  $("a").click(function(event) {
    var myClass = $(this).attr("class");
    var myId = $(this).attr('id');
    alert(myClass + " " + myId);
  });
})

<html>

<head>
  <script type="text/javascript" src="http://code.jquery.com/jquery-1.7.2.min.js"></script>
</head>

<body>
  <a href="#" id="kana1" class="konbo">click me 1</a>
  <a href="#" id="kana2" class="kinta">click me 2</a>
</body>

</html>

This works for me. There is no event.target.class function in jQuery.

回答5:

If you are using jQuery 1.7:

alert($(this).prop("class"));

or:

alert($(event.target).prop("class"));

回答6:

Careful as target might not work with all browsers, it works well with Chrome, but I reckon Firefox (or IE/Edge, can't remember) is a bit different and uses srcElement. I usually do something like

var t = ev.srcElement || ev.target;

thus leading to

$(document).ready(function() {
    $("a").click(function(ev) {
        // get target depending on what API's in use
        var t = ev.srcElement || ev.target;

        alert(t.id+" and "+$(t).attr('class'));
    });
});

Thx for the nice answers!

来源：https://stackoverflow.com/questions/11026056/getting-the-class-of-the-element-that-fired-an-event-using-jquery

标签

javascript

javascript-events

jquery