Looking to utilize the database ID below as a selector
5b4bb7d2685cfb094b1d46c3
Here is the snippet:
document.querySelector('#5b4bb7d2685cfb094b1d46c3')<button id="5b4bb7d2685cfb094b1d46c3">However, when trying the selector, an error occurs:
Uncaught DOMException: Failed to execute 'querySelector' on 'Document': '#5b4bb7d2685cfb094b1d46c3' is not a valid selector.
What is the issue with my selector?
Even though this code snippet is valid in HTML, keep in mind that you cannot start an ID with a number in CSS selectors. An alternative approach would be to utilize an attribute selector like this:
document.querySelector("[id='5b4bb7d2685cfb094b1d46c3']")
Alternatively, you could consider using getElementById instead, if that is feasible for your situation:
document.getElementById("5b4bb7d2685cfb094b1d46c3")
Another option is to utilize
document.getElementById('5b4bb7d2685cfb094b1d46c3')Commence an ID with a numeral, however, adhere to the CSS guidelines when using querySelector.
According to CSS standards, identifiers (such as element names, classes, and IDs in selectors) should only include the characters [a-zA-Z0-9] and ISO 10646 characters U+00A0 and above. They can also contain hyphens (-) and underscores (_), but cannot begin with a digit, two hyphens, or a hyphen followed by a digit.
Opt for
document.getElementById("5b4bb7d2685cfb094b1d46c3")Source:
Uncaught SyntaxError: Failed to execute 'querySelector' on 'Document'
The QuerySelector function utilizes CSS3 selectors to search through the Document Object Model (DOM). It is important to note that CSS3 does not allow ID selectors to begin with a numerical digit.
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