Is there an “exists” function for jQuery?

Question

How can I check the existence of an element in jQuery?

The current code that I have is this:

if ($(selector).length > 0) {
    // Do something
}
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Answer 1

You can use this:

// if element exists
if($('selector').length){ /* do something */ }

---

// if element does not exist
if(!$('selector').length){ /* do something */ }