Can you have multiple ids html

Can a div Have Two ids?

Can a div have two ids? While you can give a div multiple ids, only one will be applied by the browser. The second id or any other id after the first one will just be ignored by the browser. So having multiple ids for a div is not only pointless but is also incorrect HTML. If you need multiple tags for an HTML element, just use the class attribute. You can have as many classes as you want.

The best way to show whether a div can have two ids is to test it. So let’s show some examples of what happens when we give a div multiple ids.

In this first example, we will have a div with two id tags. Each id with have specific styles associated with it, so we can tell if the id is being applied to the div.

The first id, which we will call, #first, will have a background color of light green. The second div, which we will call #second, will have text that is bold. Let’s see what happens.

If you inspect the HTML in your browser you will notice that the HTML for our div appear as so:

Let’s see what happens if we swap our ids.

As you can see, the styles of the first id, this time #second, are being applied on the div.

JavaScript and Divs with multiple ids

So the main takeaway is that any other ids placed after the first id, will not show up in the HTML. So this means if we try to target the div using JavaScript, we can only target that first id and not any others. Let’s take a quick look at this.

We will have the same HTML code, just apply new styles via JavaScript.

 #third < background: #7bbfa2; >#fourth 
  

As you can see, only the first line of JavaScript is executed, because the id, #fourth does not exist in the HTML.

Let’s swap the ids to see what happens.

 #third < background: #7bbfa2; >#fourth 
  

Can multiple divs have the same id?

Finally, we will just see what happens when we have multiple divs with the same id. Once again, an id is supposed to be unique to an element. However, we will find that when we apply the same id to multiple divs, the id will be rendered and applied to all divs in the HTML.

Lets take a look at this below:

And here is what will be displayed by the browser:

This is not great practice however and to show one problem with this, let’s say we want to change the styles of our divs using JavaScript.

document.getElementById("sixth").style.background = "white"; 

This code will change the background color to white of the div with id #sixth. So let’s see the results when we use this code and have multiple divs with the same id.

As you can see, the JavaScript code will only be applied to the first element it finds with the matching id.

Hopefully this article has been useful in helping you answer the question, can a div have two ids?

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Can an HTML Element Have Multiple Ids

In XML, fragment identifiers are of
type ID, and there can only be a
single attribute of type ID per
element. Therefore, in XHTML 1.0 the
id attribute is defined to be of type
ID. In order to ensure that XHTML 1.0
documents are well-structured XML
documents, XHTML 1.0 documents MUST
use the id attribute when defining
fragment identifiers on the elements
listed above. See the HTML
Compatibility Guidelines for
information on ensuring such anchors
are backward compatible when serving
XHTML documents as media type
text/html.

Can a HTML element have multiple unique ID attributes?

Needed to know if an HTML element can have multiple attributes of ID’s

Short answer? No because the browser will only render the first one.

See this Fiddle, I can only target it in CSS using the first id that appears in the DOM. Try changing that CSS selector to use the second id , it won’t work.

That’s because it seems like the second ID is being disregarded by the browser, as this is the output HTML:

If you really need additional identifiers on an element, you should think about using either multiple class names or data attributes to correspond to additional data.

Can multiple different HTML elements have the same ID if they’re different elements?

Element IDs should be unique within the entire document.

Is it possible to have multiple ids?

No It’s not possible according to XHTML 1.0 Spec

HTML 4 defined the name attribute for the elements a, applet, form,
frame, iframe, img, and map. HTML 4 also introduced the id attribute.
Both of these attributes are designed to be used as fragment
identifiers.

In XML, fragment identifiers are of type ID, and there can only be a
single attribute of type ID per element. Therefore, in XHTML 1.0 the
id attribute is defined to be of type ID. In order to ensure that
XHTML 1.0 documents are well-structured XML documents, XHTML 1.0
documents MUST use the id attribute when defining fragment identifiers
on the elements listed above. See the HTML Compatibility Guidelines
for information on ensuring such anchors are backward compatible when
serving XHTML documents as media type text/html.

Note that in XHTML 1.0, the name attribute of these elements is
formally deprecated, and will be removed in a subsequent version of
XHTML.

But according to W3 It’s a YES

If an element has multiple ID attributes, all of them must be treated
as IDs for that element for the purposes of the ID selector. Such a
situation could be reached using mixtures of xml:id, DOM3 Core, XML
DTDs, and namespace-specific knowledge.

ID’s are single use and are only applied to one element. They are used
to identify a single element. Classes can be used more than once. They
can therefore be applied to more than one element, and more than once
per element

What error will i get if i use the same ID for multiple HTML elements?

In some environments, it may produce a console warning that multiple IDs in a single document is invalid. Harmless, but annoying.

It will prevent document.getElementById from working properly for those elements, because getElementById selects by ID, but there should only be one element with a given ID in the document. Similarly, it may prevent querySelector and querySelectorAll with ID selectors from working properly.

Using the same ID multiple times may well not break your application in most cases, but just because it might be doable in some circumstances doesn’t mean it’s a good idea. There’s no reason to do it, so don’t.

GetElementByID — Multiple IDs

document.getElementById() only supports one name at a time and only returns a single node not an array of nodes. You have several different options:

1. You could implement your own function that takes multiple ids and returns multiple elements.
2. You could use document.querySelectorAll() that allows you to specify multiple ids in a CSS selector string .
3. You could put a common class names on all those nodes and use document.getElementsByClassName() with a single class name.

doStuff(document.querySelectorAll("#myCircle1, #myCircle2, #myCircle3, #myCircle4"));

// put a common class on each object
doStuff(document.getElementsByClassName("circles"));

function getElementsById(ids) var idList = ids.split(" "); 
var results = [], item; 
for (var i = 0; i < idList.length; i++) item = document.getElementById(idList[i]); 
if (item) results.push(item); 
> 
> 
return(results);
>

doStuff(getElementsById("myCircle1 myCircle2 myCircle3 myCircle4"));

Matching when element has multiple ids

There is no such thing as «multiple ids».

According to the standard, any string data within the id property is regarded as a part of the value.

ID and NAME tokens must begin with a letter ([A-Za-z]) and may be followed by any number of letters, digits (3), hyphens («-«), underscores («_»), colons («:»), and periods («.») .

There’s another way, though! You can have all sorts of class names, and you can use jQuery to grab an element by class name.

Some Content
 


Some Content
 

The [0] part of that is because when you get elements by class name, there can be several. The jQuery selector returns an array, so you’re just grabbing the first one.

Get multiple elements by Id

If you can change the markup, you might want to use class instead.

var elements = document.getElementsByClassName("test");
var names = '';
for(var i = 0; i < elements.length; i++) names += elements[i].name;
>
document.write(names);

Why do these Youtube elements (suggestion-list-items) have same id

The HTML validator: https://validator.w3.org/ shows that
YouTube and, in fact, many Google websites as not HTML compliant.

Note: I tested a copy of the HTML because using the URL will crop some HTML that is rendered after the page is loaded.

I analyzing the required page and it showed more than 1000 html errors. See error #1001 below:

Regarding your question. The said ID is duplicate and this is not allowed in HTML. The ID was used for CSS styling (which is a bad practice to format multiple elements using the id. The good practice is to use the class. See:

Conclusion
Google websites are bad examples for learners of professional programming. In fact, I once wrote an article on LinkedIn how Google asks websites to comply to some SEO rules, however, non of Google’s websites follow their own rules of SEO. See my article on Linkedin for more details.

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Can I use multiple ID in HTML?

The HTML id attribute is used to specify a unique id for an HTML element. You cannot have more than one element with the same id in an HTML document.

Can we give ID to div?

You can make two DIVs belong to the same class, but give them different IDs. You can then apply the style common to both to the class, and the things specific to either one to their ID. The browser will first apply the class style and then the ID style, so ID styles can overwrite whatever a class has set before.

Can 2 elements have the same ID?

NO, at least IE and FireFox allow multiple elements to have the same ID. and see all the repeated ids. document. querySelector(‘#foo’) // returns the first element with document.

Can two elements have the same ID?

If you have multiple elements with the same ID, you’ll only run into problems when using JavaScript to access those elements. For example, if you were to do document. getElementById(‘duplicateId’) , you would only get back one element instead of two. Other than that, the browser will render the page just fine.

What is the purpose of div id?

The id attribute is used to label sections or parts of your HTML document. You may only use the same id once per page, so save it for important major sections of your page. Additionally, the id selector in CSS has a high specificity level and therefore overrules other things (like the class selector).

Can you have multiple IDs on one div tag?

You cannot have multiple IDs for a single div tag. There is never any need for multiple ids on the same tag since ids are unique either one would serve to uniquely identify that specific tag provided you first get rid of the other id which is stopping things working.

What’s the difference between an ID and a Div?

A is an example of a block-level element, it keeps its inner workings contained as a discrete piece.

tags do much the same. id’s, on the other hand, are unique names for page elements. While there are standards boards that set what HTML elements we can use, there are far fewer limits on id’s. You, the developer, create them.

Can you have multiple classes in a Div?

You could however, have multiple classes on the DIV, which may or may not solve your problem. And to take it one step further, you can have multiple classes and an ID on an element. AtSea_webdesign Septem, 12:19pm #7 And to take it one step further, you can have multiple classes and an ID on an element. I use this technique quite a lot.

Can a single HTML element have multiple IDs?

No you cannot have multiple ids for a single tag, but I have seen a tag with a name attribute and an id attribute which are treated the same by some applications. No, you should use nested DIVs if you want to head down that path. Besides, even if you could, imagine the confusion it would cause when you run document.getElementByID ().

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