Does jQuery Have a Concise 'Exists' Function Check?

Does jQuery Have an "Exists" Function?

In jQuery, the length property of a selection represents the number of elements that match the selector. Therefore, a simple check for existence can be performed using the following code:

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

While this approach is straightforward, it may not be the most elegant solution.

A More Elegant Approach

In JavaScript, values are either "truthy" or "falsy". For numbers, 0 is considered false, while all other values are true. This property can be leveraged for a more concise check:

if ($(selector).length) {
    // Do something
}

Omitting the comparison to 0 eliminates the need for an additional operator and produces a shorter and more readable code snippet.

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