How can I get the ID of an element using jQuery?

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<div id="test"></div>
<script>
  $(document).ready(function() {
    alert($('#test').id);
  });  
</script>

Why doesn't the above work, and how should I do this?

The jQuery way:

$('#test').attr('id')

In your example:

$(document).ready(function() {
  console.log($('#test').attr('id'));
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div id="test"></div>

How can I get the ID of an element using jQuery?, Calling jQuery() (or $() ) with an id selector as its argument will return a jQuery object containing a collection of either zero or one DOM element. Each id value  In jQuery attr method is use to get the id attribute of the first matching element. $(btn1).attr(id) In your example <html > <head> <title>iddo Home

$('selector').attr('id') will return the id of the first matched element. Reference.

If your matched set contains more than one element, you can use the conventional .each iterator to return an array containing each of the ids:

var retval = []
$('selector').each(function(){
  retval.push($(this).attr('id'))
})
return retval

Or, if you're willing to get a little grittier, you can avoid the wrapper and use the .map shortcut.

return $('.selector').map(function(index,dom){return dom.id})

ID Selector (“#id”), Hi there, I wonder how I can get the id of the current element i'm looking at. I use a jquery selector with only classes to get the elements. regards  Alternatively, you can also use the jQuery data() method (jQuery version >= 1.4.3), to get the data-attribute of an element using the syntax like $(element).data(key). That means in the above example to get the data-id using data() method you can use the statement like $(this).data("id").

id is a property of an html Element. However, when you write $("#something"), it returns a jQuery object that wraps the matching DOM element(s). To get the first matching DOM element back, call get(0)

$("#test").get(0)

On this native element, you can call id, or any other native DOM property or function.

$("#test").get(0).id

That's the reason why id isn't working in your code.

Alternatively, use jQuery's attr method as other answers suggest to get the id attribute of the first matching element.

$("#test").attr("id")

Get id of current element, In jQuery attr method is use to get the id attribute of the first matching element. $(​btn1).attr(id) In your example iddo $('#test') returns a jQuery object, so you can't use simply object.id to get its Id. you need to use $('#test').attr('id'), which returns your required ID of the element . This can also be done as follows , $('#test').get(0).id which is equal to document.getElementById('test').id

Above answers are great, but as jquery evolves.. so you can also do:

var myId = $("#test").prop("id");

How can I get the ID of an DOM element using jQuery?, jQuery selectors allow you to select and manipulate HTML element(s). jQuery selectors are used to "find" (or select) HTML elements based on their name, id,  Definition and Usage. The #id selector selects the element with the specific id. The id refers to the id attribute of an HTML element. Note: The id attribute must be unique within a document. Note: Do not start an id attribute with a number. It may cause problems in some browsers.

$.fn.extend({
    id : function() {
        return this.attr('id');
    }
});

alert( $('#element').id() );

Some checking code required of course, but easily implemented!

jQuery Selectors, Definition and Usage. The #id selector selects the element with the specific id. The id refers to the id attribute of an HTML element. Note: The id attribute must be​  Calling jQuery() (or $()) with an id selector as its argument will return a jQuery object containing a collection of either zero or one DOM element. Each id value must be used only once within a document. If more than one element has been assigned the same ID, queries that use that ID will only select the first matched element in the DOM. This behavior should not be relied on, however; a document with more than one element using the same ID is invalid.

jQuery #id Selector, jQuery on() Method: This method adds one or more event handlers for the selected elements and child elements. Syntax: $(selector).on(event, childSelector​, data,  I need to change an element's ID using jQuery. Apparently these don't work: I found out that I can make it happen with the following code: But that doesn't seem right to me. There must be a better way, no? Also, in case there isn't, what other method can I use instead of show/hide or other effects? Obviously I don't want to show/hide or affect

How to find element with specific ID using jQuery ?, Get Element IDs using jQuery attr() Method. The attr() method retrieves the attributes of an element. The id is one attributes. For example,. <html>  JQUery has a .parents() method for moving up the DOM tree you can start there. If you're interested in doing this a more semantic way I don't think using the REL attribute on a button is the best way to

How to Get the ID's of Every DIV element using jQuery, I am encountering an issue when trying to get the id attribute of an element using the $(this) keyword and the attr(“id”) method. Here is my  Jquery Course. This tutorial shows how to get the attribute value of a clicked item with jQuery, any attribute which is added in that HTML tag (id, class, name, title, src, etc.). - To get the attribute value of an element with jQuery, it is used attr() function.

Comments
  • Getting the ID of an element that has been selected via its ID? o.O
  • It amazes me each time that jQuery does not have a shortcut for this like $('#test').id().
  • It would be rarely useful because id's are typically hard-coded into the HTML and JS. When you write JS, you already know the ID of some element, so you write that ID to retrieve the element. You rarely need to get the ID of an element programmatically.
  • Make that 164969 times. Plus now I'm here. I have code that initializes forms. A few of the forms have special requirements. I could look for specific form elements to decide what to do, but I think identifying the form - thus the id of the form - is the most logical and surefire way.
  • Why would I need to get an element's id? Because I have an event handler attached to a class of elements, and I need to know which particular element triggered the event. I hope I'm doing this right.
  • Opps.. make that 1,122,603 times.. :P
  • BTW, I think retval.push($(this).attr('id')) can be written retval.push(this.id)
  • If you need an attribute of HMTL5 data-** then use something like this: return $('.selector').map(function(i, dom){ return $(dom).attr('data-id'); })
  • The .selector property was deprecated in jQuery 1.7 and is only maintained to the extent needed for supporting .live() in the jQuery Migrate plugin. The property was never a reliable indicator of the selector that could be used to obtain the set of elements currently contained in the jQuery set where it was a property, since subsequent traversal methods may have changed the set.
  • @cjbarth attr() was added in 1.0, and prop() was added in 1.6, so I'm assuming your comment was prop() is the new way.
  • @ErikPhilips I believe, rather than old way and new way, it depends whether you are interested in the original output when the page loaded (attr) or that potentially modified by script (prop). If you aren't actually modifying the id attribute of any element using client side script, then prop and attr are identical.
  • There you go, for the people that whine about jQuery not having an .id() method!
  • .. and also $('#test')[0].id which is the same as .get(0)
  • I'm grateful to downvoters when they explain what's wrong in my understanding. otherwise I find them as interesting as a mosquito.