Check if a div does NOT exist with javascript

Question

Checking if a div exists is fairly simple

if(document.getif(document.getElementById(\'if\')){

}

But how can I check if a div with the give

Answer 1

Try getting the element with the ID and check if the return value is null:

document.getElementById('some_nonexistent_id') === null

If you're using jQuery, you can do:

$('#some_nonexistent_id').length === 0