When to Use the Hash (#) in jQuery to Determine Element Existence?

How to Determine Element Existence in jQuery

When attempting to determine the existence of an element created using jQuery's .append() method, using $('elemId').length may not provide the desired result.

Solution:

To effectively check for element existence, the correct syntax in jQuery requires the use of a hash (#) before the element ID.

$('#elemId').length

This ensures that jQuery correctly targets the element by its ID, similar to how CSS selectors work. While vanilla JavaScript doesn't require the hash for getElementById(), jQuery requires it when referencing elements by ID.

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