HTML id attribute

[dantepicchioni]

Dear Colleagues,

Hi.  When you say "You cannot have more than one element with the same id in an HTML document" (https://www.w3schools.com/html/html_id.asp), why do you use the word "cannot"?  Should this not be "should not" because you clearly can.

Sincerely,

Dante
 

[dantepicchioni]

☹️

[JamesL]

If you have multiple IDs in a document, the browser will set the value to the last one.

For example:

<a id="link" href="https://google.com">Google</a>

<a id="link" href="https://yahoo.com">Yahoo</a>

<a id="link" href="https://ebay.com">eBay</a>

In this case, the href value of the id 'link' will be 'https://ebay.com'.

The other two are replaced by the last value.

Can you do it? Sure.

Does it help you? Not one bit.

It doesn't cause your browser to self-destruct or anything. But, you can't write functional Javascript code.