Should find return null when no nodes are found?

[Saartje87]

No description provided.

[jonkoops]

Something I often do when creating i.e. a slider is finding a couple of nodes inside other nodes for validation purposes. Here's an over exaggerated example:

<div id="slider">
    <div class="slider-viewport">
        <div class="slides-wrapper">
            <div class="slide">Slide 1</div>
            <div class="slide">Slide 2</div>
            <div class="slide">Slide 3</div>
        </div>
    </div>
</div>

var Slider = PB.Class({

    construct: function ( target ) {

        this.node = PB.$(target);

        if( !this.node ) {
            return;
        }

        this.viewport = this.node.find('.slider-viewport');
        this.slidesWrapper = this.viewport.find('.slides-wrapper');
        this.slides = this.slidesWrapper.find('.slide');

        if( !this.viewport.length && 
            !this.slidesWrapper.length &&
            !this.slides.length ) {

            return;
        }

    }

});

If .find were to return null, I'd have to add an if statement for every call. This would obviously over-complicate production code.