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
}

Is there a more elegant way to approach this? Perhaps a plugin or a function?

Answer 1

Yes! The $. fn. exists example is replacing a property lookup (cheap!) with two function calls, which are much more expensive—and one of those function calls recreates a jQuery object that you already have.